document_title: List of solar eclipses in the 21st century

question_text: when is the last time america had a total solar eclipse

text:
Lists of solar eclipses

Geometry of a total solar eclipse
(not to scale)

Centuries

BC[show]

20th
19th
18th
17th
16th
15th
14th
13th
12th
11th
10th
9th
8th
7th
6th
5th
4th
3rd
2nd
1st

AD

1st
2nd
3rd
4th
5th
6th
7th
8th
9th
10th
11th
12th
13th
14th
15th
16th
17th
18th
19th
20th
21st
22nd
23rd
24th
25th
26th
27th
28th
29th
30th

Eclipses seen from

Australia
China
Philippines
Russia
Ukraine
United Kingdom
United States

See also Lists of lunar eclipses

text: During the 21st century, there will be 224 solar eclipses of which 77 will be partial, 72 will be annular, 68 will be total and 7 will be hybrids between total and annular eclipses. Of these, two annular and one total eclipse will be non-central,[1] in the sense that the very center (axis) of the moon's shadow will miss the earth (for more information see gamma).[2] In the 21st century the greatest number of eclipses in one year is four, in 2011, 2029, 2047, 2065, 2076, and 2094. The predictions given here are by Fred Espenak of NASA's Goddard Space Flight Center.[1]

text: At this point, the longest duration in which the moon completely covered the sun, known as totality, was during the solar eclipse of July 22, 2009. This total solar eclipse had a maximum duration of 6 minutes and 39 seconds. The longest possible duration of a total solar eclipse is 7 minutes and 32 seconds. The longest annular solar eclipse of the 21st century took place on January 15, 2010, with a duration of 11 minutes and 8 seconds. The maximum possible duration is 12 minutes and 29 seconds. The eclipse of May 20, 2050, will be the second hybrid eclipse in the span of less than one year, the first one being on November 25, 2049.[a]

text: The next solar eclipse (Partial) will occur on February 15, 2018; the last solar eclipse (Total) occurred on August 21, 2017.

text: The table contains the date and time of the greatest eclipse (in dynamical time, which in this case is the time when the axis of the Moon's shadow cone passes closest to the centre of Earth; this is in Universal Time). The number of the saros series that the eclipse belongs to is given, followed by the magnitude of the eclipse (the fraction of the Sun's diameter obscured by the Moon) and the type of the eclipse (either total, annular, partial or hybrid). For total and annular eclipses, the duration of the eclipse is given, as well as the location of the greatest eclipse (the point of maximum eclipse) and the path width of the total or annular eclipse. The geographical areas from which the eclipse can be seen are listed.[3]

text:
Date
Time of
greatest eclipse
(UTC)
Saros
Type
Magnitude
Central
duration
(min:s)
Location
Path width
Geographical area
Ref(s)

km
mi

2001-06-21 June 21, 2001
12:04:46
127
Total
1.050
4:57
-11.3 11°18′S 2°42′E / 11.3°S 2.7°E / -11.3; 2.7
200
120
Total: Angola, Zambia, Zimbabwe, Mozambique and Madagascar
Partial: South America, Africa

[a][4]

2001-12-14 December 14, 2001
20:53:01
132
Annular
0.968
3:53
00.6 0°36′N 130°42′W / 0.6°N 130.7°W / 0.6; -130.7
126
78
Annular: Nicaragua and Costa Rica
Partial: North and Central America, northwestern South America, Hawaii

[a][4]

2002-06-10 June 10, 2002
23:45:22
137
Annular
0.996
0:23
34.5 34°30′N 178°36′W / 34.5°N 178.6°W / 34.5; -178.6
13
8.1
Annular: Manado, Indonesia, Guam, Northern Mariana Islands, and Puerto Vallarta, Mexico
Partial: eastern Asia, northeastern Australia, North America, Hawaii

[a][4]

2002-12-04 December 4, 2002
07:32:16
142
Total
1.024
2:04
-39.5 39°30′S 59°36′E / 39.5°S 59.6°E / -39.5; 59.6
87
54
Total: Angola, Botswana, Zimbabwe, South Africa, Mozambique and South Australia
Partial: Africa, Antarctica, Indonesia, Australia

[a][4]

2003-05-31 May 31, 2003
04:09:22
147
Annular
0.938
3:37
66.6 66°36′N 24°30′W / 66.6°N 24.5°W / 66.6; -24.5
—
Annular: Greenland, Iceland, northeastern Scotland, Faroe Islands, Shetland Islands
Partial: Eastern Europe, northern and western Asia, Middle East, Alaska, Greenland and northwestern Canada

[a][4]

2003-11-23 November 23, 2003
22:50:22
152
Total
1.038
1:57
-72.7 72°42′S 88°24′E / 72.7°S 88.4°E / -72.7; 88.4
495
308
Total: East Antarctica
Partial: Australia, New Zealand, Antarctica, southern Chile and Argentina

[a][4]

2004-04-19 April 19, 2004
13:35:05
119
Partial
0.737
—
-61.6 61°36′S 44°18′E / 61.6°S 44.3°E / -61.6; 44.3
—
Partial: Antarctic Peninsula, east Antarctica, southern Africa
[a][4]

2004-10-14 October 14, 2004
03:00:23
124
Partial
0.928
—
61.2 61°12′N 153°42′W / 61.2°N 153.7°W / 61.2; -153.7
—
Partial: eastern Russia, Mongolia, Northeastern China, Korea, Japan, Hawaii, western Alaska
[a][4]

2005-04-08 April 8, 2005
20:36:51
129
Hybrid
1.007
0:42
-10.6 10°36′S 119°00′W / 10.6°S 119.0°W / -10.6; -119.0
27
17
Hybrid: Venezuela, Colombia, Panama, southeastern French Polynesia, Bounty Islands
Partial: Pacific, Mexico, Central America, Caribbean, western South America, New Zealand, West Antarctica

[a][4]

2005-10-03 October 3, 2005
10:32:47
134
Annular
0.958
4:32
12.9 12°54′N 28°42′E / 12.9°N 28.7°E / 12.9; 28.7
162
101
Annular: Portugal, Spain, Algeria, Tunisia, Libya, Chad, Sudan, Kenya and Somalia
Partial: Africa, Europe, Western Asia, Middle East and India Pakistan

[a][4]

2006-03-29 March 29, 2006
10:12:23
139
Total
1.052
4:07
23.2 23°12′N 16°42′E / 23.2°N 16.7°E / 23.2; 16.7
104
65
Total: Brazil, Ghana, Togo, Benin, Nigeria, Niger, Libya, northwest Egypt, Turkey, Georgia, southwestern Russia and Kazakhstan
Partial: North Africa, Central Africa, eastern Brazil, Central Asia, Middle East, India Pakistan and Europe

[a][4]

2006-09-22 September 22, 2006
11:41:16
144
Annular
0.935
7:09
-20.6 20°36′S 9°06′W / 20.6°S 9.1°W / -20.6; -9.1
261
162
Annular: Guyana, Suriname and French Guiana
Partial: South America, West Africa, Southern Africa, Antarctic Peninsula, east Antarctica

[a][4]

2007-03-19 March 19, 2007
02:32:57
149
Partial
0.876
—
61.0 61°00′N 55°30′E / 61.0°N 55.5°E / 61.0; 55.5
—
Partial: Asia, western Alaska
[a][4]

2007-09-11 September 11, 2007
12:32:24
154
Partial
0.751
—
-61.0 61°00′S 90°12′W / 61.0°S 90.2°W / -61.0; -90.2
—
Partial: Central and Southern South America, Antarctic Peninsula, east Antarctica, south Atlantic
[a][4]

2008-02-07 February 7, 2008
03:56:10
121
Annular
0.965
2:12
-67.6 67°36′S 150°30′W / 67.6°S 150.5°W / -67.6; -150.5
444
276
Annular: West Antarctica
Partial: Antarctica, southeastern Australia, New Zealand, southeastern Melanesia, southeastern Micronesia, southeastern Polynesia

[a][4]

2008-08-01 August 1, 2008
10:22:12
126
Total
1.039
2:27
65.7 65°42′N 72°18′E / 65.7°N 72.3°E / 65.7; 72.3
237
147
Total: Nunavut, northern Greenland, central Russia, western Mongolia, western China
Partial: Nova Scotia, PEI, New Brunswick, Quebec, Nunavut, Greenland, northern Europe, Asia

[a][4]

2009-01-26 January 26, 2009
07:59:45
131
Annular
0.928
7:54
-34.1 34°06′S 70°12′E / 34.1°S 70.2°E / -34.1; 70.2
280
170
Annular: southeast Sumatra, Jakarta and Borneo
Partial: Southern Africa, east Antarctica, South East Asia, Philippines, Australia

[a][4]

2009-07-22 July 22, 2009
02:36:25
136
Total
1.080
6:39
24.2 24°12′N 144°06′E / 24.2°N 144.1°E / 24.2; 144.1
258
160
Total: central and northeastern Pakistan India, Bhutan, Bangladesh, Myanmar, China, northern part of the Ryukyu Islands (Satsunan)
Partial: Southeast Asia, Japan, South Korea, the Philippines, Indonesia, Central Pacific Ocean area and its islands

[a][4]

2010-01-15 January 15, 2010
07:07:39
141
Annular
0.919
11:08
01.6 1°36′N 69°18′E / 1.6°N 69.3°E / 1.6; 69.3
333
207
Annular: Central African Republic, Democratic Republic of the Congo, Uganda, Maldives, southeastern India, Pakistan, Sri Lanka, Myanmar, central China
Partial: Africa, Southeastern Europe, Middle East, Asia

[a][4]

2010-07-11 July 11, 2010
19:34:38
146
Total
1.058
5:20
-19.7 19°42′S 121°54′W / 19.7°S 121.9°W / -19.7; -121.9
259
161
Total: Southern Chile and Argentina, Southeastern Polynesia
Partial: southwestern South America, French Polynesia, Hawaii

[a][4]

2011-01-04 January 4, 2011
08:51:42
151
Partial
0.858
—
64.7 64°42′N 20°48′E / 64.7°N 20.8°E / 64.7; 20.8
—
Partial: Europe, Northern Africa, Central Asia, Middle East
[a][4]

2011-06-01 June 1, 2011
21:17:18
118
Partial
0.601
—
67.8 67°48′N 46°48′E / 67.8°N 46.8°E / 67.8; 46.8
—
Partial: Iceland, northern Canada, Alaska, northeastern Asia, Greenland, northern Scandinavia
[a][4]

2011-07-01 July 1, 2011
08:39:30
156
Partial
0.097
—
-65.2 65°12′S 28°36′E / 65.2°S 28.6°E / -65.2; 28.6
—
Partial: Southern Indian Ocean near Antarctica
[a][4]

2011-11-25 November 25, 2011
06:21:24
123
Partial
0.905
—
-68.6 68°36′S 82°24′W / 68.6°S 82.4°W / -68.6; -82.4
—
Partial: Southwestern South Africa, Antarctica, Tasmania, New Zealand
[a][4]

2012-05-20 May 20, 2012
23:53:54
128
Annular
0.944
5:46
49.1 49°06′N 176°18′E / 49.1°N 176.3°E / 49.1; 176.3
237
147
Annular: Southern China, Hong Kong, Macau, Kyushu, Shikoku, southern Honshu, Tokyo, Oregon, California, Nevada, Utah, Arizona, New Mexico, Texas
Partial: Pacific, eastern Asia, North America, Hawaii

[a][4]

2012-11-13 November 13, 2012
22:12:55
133
Total
1.050
4:02
-40.0 40°00′S 161°18′W / 40.0°S 161.3°W / -40.0; -161.3
179
111
Total: Arnhem Land and central Cape York Peninsula, Australia, Kermadec Islands, New Zealand
Partial: Australia, New Zealand, Melanesia, Southeastern South America, Southern Pacific, Polynesia, Antarctic Peninsula, West Antarctica, Talos Dome

[a][4]

2013-05-10 May 10, 2013
00:26:20
138
Annular
0.954
6:03
02.2 2°12′N 175°30′E / 2.2°N 175.5°E / 2.2; 175.5
173
107
Annular: Western Australia, Northern Territory and Queensland, Australia, Louisiade Archipelago, Solomon Islands, Kiribati
Partial: Australia, New Zealand, Central Pacific, Hawaii, Indonesia

[a][4]

2013-11-03 November 3, 2013
12:47:36
143
Hybrid
1.016
1:40
03.5 3°30′N 11°42′W / 3.5°N 11.7°W / 3.5; -11.7
58
36
Hybrid: Gabon, Republic of the Congo, Democratic Republic of the Congo, Uganda, Kenya, Ethiopia
Partial: Eastern America, Eastern Canada, Caribbean, Eastern South America, South Europe, Africa

[a][4]

2014-04-29 April 29, 2014
06:04:33
148
Annular (non-central)
0.987
—
-70.6 70°36′S 131°18′E / 70.6°S 131.3°E / -70.6; 131.3
—
Annular: western Wilkes Land

Partial: South Indian Ocean, Australia, east Antarctica

[a][4]

2014-10-23 October 23, 2014
21:45:39
153
Partial
0.811
—
71.2 71°12′N 97°12′W / 71.2°N 97.2°W / 71.2; -97.2
—
Partial: Northern Pacific, North America, Mexico, Eastern Russia
[a][4]

2015-03-20 March 20, 2015
09:46:47
120
Total
1.045
2:47
64.4 64°24′N 6°36′W / 64.4°N 6.6°W / 64.4; -6.6
463
288
Total: Faroe Islands, Svalbard, North Atlantic, North Pole
Partial: Greenland, Europe, Central Asia, Western Russia

[a][4]

2015-09-13 September 13, 2015
06:55:19
125
Partial
0.788
—
-72.1 72°06′S 2°18′W / 72.1°S 2.3°W / -72.1; -2.3
—
Partial: Southern Africa, South Indian Ocean, east Antarctica
[a][4]

2016-03-09 March 9, 2016
01:58:19
130
Total
1.045
4:09
10.1 10°06′N 148°48′E / 10.1°N 148.8°E / 10.1; 148.8
155
96
Total: Indonesia, Micronesia, Marshall Islands
Partial: Southeastern Asia, Korea, Japan, Eastern Russia, Alaska, northwestern Australia, Hawaii, Pacific

[a][4]

2016-09-01 September 1, 2016
09:08:02
135
Annular
0.974
3:06
-10.7 10°42′S 37°48′E / 10.7°S 37.8°E / -10.7; 37.8
100
62
Annular: Atlantic, Central Africa, Madagascar, Indian
Partial: Africa, Indian Ocean

[a][5]

2017-02-26 February 26, 2017
14:54:33
140
Annular
0.992
0:44
-34.7 34°42′S 31°12′W / 34.7°S 31.2°W / -34.7; -31.2
31
19
Annular: southern Chile and Argentina, Angola, southwestern Katanga
Partial: Southern and Western Africa, Southern South America, Antarctica

[a][4]

2017-08-21 August 21, 2017
18:26:40
145
Total
1.031
2:40
37.0 37°00′N 87°42′W / 37.0°N 87.7°W / 37.0; -87.7
115
71
Total: Oregon, Idaho, Wyoming, Nebraska, northeastern Kansas, Missouri, Southern Illinois, Western Kentucky, Tennessee, Southwestern North Carolina, northeastern Georgia, South Carolina
Partial: North America, Hawaii, Greenland, Iceland, British Isles, Portugal, Central America, Caribbean, northern South America, Chukchi Peninsula

[a][4] [6]

2018-02-15 February 15, 2018
20:52:33
150
Partial
0.599
—
-71.0 71°00′S 0°36′E / 71.0°S 0.6°E / -71.0; 0.6
—
Partial: Antarctica, Southern South America
[a][4]

2018-07-13 July 13, 2018
03:02:16
117
Partial
0.336
—
-67.9 67°54′S 127°24′E / 67.9°S 127.4°E / -67.9; 127.4
—
Partial: South Australia, Victoria, Tasmania, Indian Ocean, Budd Coast
[a][4]

2018-08-11 August 11, 2018
09:47:28
155
Partial
0.737
—
70.4 70°24′N 174°30′E / 70.4°N 174.5°E / 70.4; 174.5
—
Partial: Northeastern Canada, Greenland, Iceland, Arctic Ocean, Scandinavia, northern British Isles, Russia, northern Asia
[a][4]

2019-01-06 January 6, 2019
01:42:38
122
Partial
0.715
—
67.4 67°24′N 153°36′E / 67.4°N 153.6°E / 67.4; 153.6
—
Partial: Northeastern Asia, Southwestern Alaska, Aleutian Islands
[a][4]

2019-07-02 July 2, 2019
19:24:08
127
Total
1.046
4:33
-17.4 17°24′S 109°00′W / 17.4°S 109.0°W / -17.4; -109.0
201
125
Total: Pitcairn Islands, central Argentina and Chile, Tuamotu Archipelago
Partial: South America, Easter Island, Galapagos Islands, Southern Central America, Polynesia

[a][4]

2019-12-26 December 26, 2019
05:18:53
132
Annular
0.970
3:40
01.0 1°00′N 102°18′E / 1.0°N 102.3°E / 1.0; 102.3
118
73
Annular: northeastern Pakistan Saudi Arabia, Bahrain, Qatar, United Arab Emirates, Oman, Lakshadweep, Southern India, Sri Lanka, northern Sumatra, southern Malaysia, Singapore, Borneo, central Indonesia, Palau, Micronesia, Guam
Partial: Asia, Western Melanesia, northwestern Australia, Middle East, East Africa

[a][4]

2020-06-21 June 21, 2020
06:41:15
137
Annular
0.994
0:38
30.5 30°30′N 79°42′E / 30.5°N 79.7°E / 30.5; 79.7
21
13
Annular: Democratic Republic of the Congo, Sudan, Ethiopia, Eritrea, Yemen, Empty Quarter, Oman, southern Pakistan, northern India, New Delhi, Tibet, southern China, Chongqing, Taiwan
Partial: Asia, Southeastern Europe, Africa, Middle East, West Melanesia, Western Australia, Northern Territory, Cape York Peninsula

[a][4]

2020-12-14 December 14, 2020
16:14:39
142
Total
1.025
2:10
-40.3 40°18′S 67°54′W / 40.3°S 67.9°W / -40.3; -67.9
90
56
Total: Southern Chile and Argentina, Kiribati, Polynesia
Partial: Central and Southern South America, Southwest Africa, Antarctic Peninsula, Ellsworth Land, Western Queen Maud Land

[a][4]

2021-06-10 June 10, 2021
10:43:07
147
Annular
0.943
3:51
80.8 80°48′N 66°48′W / 80.8°N 66.8°W / 80.8; -66.8
527
327
Annular: Northern Canada, Greenland, Russia
Partial: Northern North America, Europe, Asia

[a][7]

2021-12-04 December 4, 2021
07:34:38
152
Total
1.037
1:54
-76.8 76°48′S 46°12′W / 76.8°S 46.2°W / -76.8; -46.2
419
260
Total: Antarctica
Partial: South Africa, South Atlantic
[a][7]

2022-04-30 April 30, 2022
20:42:36
119
Partial
0.640
—
-62.1 62°06′S 71°30′W / 62.1°S 71.5°W / -62.1; -71.5
—
Partial: Southeast Pacific, Southern South America
[a][7]

2022-10-25 October 25, 2022
11:01:20
124
Partial
0.862
—
61.6 61°36′N 77°24′E / 61.6°N 77.4°E / 61.6; 77.4
—
Partial: Europe, northeast Africa, Mid East, West Asia
[a][7]

2023-04-20 April 20, 2023
04:17:56
129
Hybrid
1.013
1:16
-09.6 9°36′S 125°48′E / 9.6°S 125.8°E / -9.6; 125.8
49
30
Hybrid: Indonesia, Australia, Papua New Guinea
Partial: Southeast Asia, East Indies, Philippines, New Zealand
[a][7]

2023-10-14 October 14, 2023
18:00:41
134
Annular
0.952
5:17
11.4 11°24′N 83°06′W / 11.4°N 83.1°W / 11.4; -83.1
187
116
Annular: Western United States, Central America, Colombia, Brazil
Partial: North America, Central America, South America
[a][7]

2024-04-08 April 8, 2024
18:18:29
139
Total
1.057
4:28
25.3 25°18′N 104°06′W / 25.3°N 104.1°W / 25.3; -104.1
198
123
Total: Mexico, central and northeastern United States, East Canada
Partial: North America, Central America
[a][7]

2024-10-02 October 2, 2024
18:46:13
144
Annular
0.933
7:25
-22.0 22°00′S 114°30′W / 22.0°S 114.5°W / -22.0; -114.5
266
165
Annular: Southern Chile, Southern Argentina
Partial: Pacific, Southern South America
[a][7]

2025-03-29 March 29, 2025
10:48:36
149
Partial
0.938
—
61.1 61°06′N 77°06′W / 61.1°N 77.1°W / 61.1; -77.1
—
Partial: Northwest Africa, Europe, northern Russia
[a][7]

2025-09-21 September 21, 2025
19:43:04
154
Partial
0.855
—
-60.9 60°54′S 153°30′E / 60.9°S 153.5°E / -60.9; 153.5
—
Partial: South Pacific, New Zealand, Antarctica
[a][7]

2026-02-17 February 17, 2026
12:13:06
121
Annular
0.963
2:20
-64.7 64°42′S 86°48′E / 64.7°S 86.8°E / -64.7; 86.8
616
383
Annular: Antarctica
Partial: South Argentina, Chile, South Africa, Antarctica
[a][7]

2026-08-12 August 12, 2026
17:47:06
126
Total
1.039
2:18
65.2 65°12′N 25°12′W / 65.2°N 25.2°W / 65.2; -25.2
294
183
Total: Arctic, Greenland, Iceland, Spain, Northeastern Portugal
Partial: Northern North America, Western Africa, Europe
[a][7]

2027-02-06 February 6, 2027
16:00:48
131
Annular
0.928
7:51
-31.3 31°18′S 48°30′W / 31.3°S 48.5°W / -31.3; -48.5
282
175
Annular: Chile, Argentina, Atlantic
Partial: South America, Antarctica, West and South Africa
[a][7]

2027-08-02 August 2, 2027
10:07:50
136
Total
1.079
6:23
25.5 25°30′N 33°12′E / 25.5°N 33.2°E / 25.5; 33.2
258
160
Total: Morocco, Spain, Algeria, Tunisia, Libya, Egypt, Saudi Arabia, Yemen, Somalia
Partial: Africa, Europe, Mid East, West and South Asia
[a][7]

2028-01-26 January 26, 2028
15:08:59
141
Annular
0.921
10:27
03.0 3°00′N 51°30′W / 3.0°N 51.5°W / 3.0; -51.5
323
201
Annular: Ecuador, Peru, Brazil, Suriname, Spain, Portugal
Partial: Eastern North America, Central and South America, Western Europe, northwest Africa
[a][7]

2028-07-22 July 22, 2028
02:56:40
146
Total
1.056
5:10
-15.6 15°36′S 126°42′E / 15.6°S 126.7°E / -15.6; 126.7
230
140
Total: Australia, New Zealand
Partial: Southeast Asia, East Indies
[a][7]

2029-01-14 January 14, 2029
17:13:48
151
Partial
0.871
—
63.7 63°42′N 114°12′W / 63.7°N 114.2°W / 63.7; -114.2
—
Partial: North America, Central America
[a][7]

2029-06-12 June 12, 2029
04:06:13
118
Partial
0.458
—
66.8 66°48′N 66°12′W / 66.8°N 66.2°W / 66.8; -66.2
—
Partial: Arctic, Scandinavia, Alaska, northern Asia, northern Canada
[a][7]

2029-07-11 July 11, 2029
15:37:19
156
Partial
0.230
—
-64.3 64°18′S 85°36′W / 64.3°S 85.6°W / -64.3; -85.6
—
Partial: Southern Chile, Southern Argentina
[a][7]

2029-12-05 December 5, 2029
15:03:58
123
Partial
0.891
—
-67.5 67°30′S 135°42′E / 67.5°S 135.7°E / -67.5; 135.7
—
Partial: Southern Argentina, Southern Chile, Antarctica
[a][7]

2030-06-01 June 1, 2030
06:29:13
128
Annular
0.944
5:21
56.5 56°30′N 80°06′E / 56.5°N 80.1°E / 56.5; 80.1
250
160
Annular: Algeria, Tunisia, Greece, Turkey, Russia, northern China, Japan
Partial: Europe, Northern Africa, Mid East, Asia, Arctic, Alaska
[a][7]

2030-11-25 November 25, 2030
06:51:37
133
Total
1.047
3:44
-43.6 43°36′S 71°12′E / 43.6°S 71.2°E / -43.6; 71.2
169
105
Total: Botswana, South Africa, Australia
Partial: South Africa, Southern Indian Ocean, East Indies, Australia, Antarctica
[a][7]

2031-05-21 May 21, 2031
07:16:04
138
Annular
0.959
5:26
08.9 8°54′N 71°42′E / 8.9°N 71.7°E / 8.9; 71.7
152
94
Annular: Angola, Republic of the Congo, Zambia, Tanzania, south Indian Ocean, Malaysia, Indonesia
Partial: Africa, south Asia, East Indies, Australia
[a][8]

2031-11-14 November 14, 2031
21:07:31
143
Hybrid
1.011
1:08
-00.6 0°36′S 137°36′W / 0.6°S 137.6°W / -0.6; -137.6
38
24
Hybrid: Pacific, Panama
Partial: south United States, Central America, northwest South America
[a][8]

2032-05-09 May 9, 2032
13:26:42
148
Annular
0.996
0:22
-51.3 51°18′S 7°06′W / 51.3°S 7.1°W / -51.3; -7.1
44
27
Annular: south Atlantic
Partial: south South America, South Africa
[a][8]

2032-11-03 November 3, 2032
05:34:13
153
Partial
0.855
—
70.4 70°24′N 132°36′E / 70.4°N 132.6°E / 70.4; 132.6
—
Partial: Asia
[a][8]

2033-03-30 March 30, 2033
18:02:36
120
Total
1.046
2:37
71.3 71°18′N 155°48′W / 71.3°N 155.8°W / 71.3; -155.8
781
485
Total: east Russia, Alaska
Partial: North America
[a][8]

2033-09-23 September 23, 2033
13:54:31
125
Partial
0.689
—
-72.2 72°12′S 121°12′W / 72.2°S 121.2°W / -72.2; -121.2
—
Partial: south South America, Antarctica
[a][8]

2034-03-20 March 20, 2034
10:18:45
130
Total
1.046
4:09
16°06′N 22°12′E / 16.1°N 22.2°E / 16.1; 22.2
159
99
Total: Nigeria, Cameroon, Chad, Sudan, Egypt, Saudi Arabia, Iran, Afghanistan, Pakistan, India, China
Partial: Africa, Europe, west Asia
[a][8]

2034-09-12 September 12, 2034
16:19:28
135
Annular
0.974
2:58
-18.2 18°12′S 72°36′W / 18.2°S 72.6°W / -18.2; -72.6
102
63
Annular: Chile, Bolivia, Argentina, Paraguay, Brazil
Partial: Central America, South America
[a][8]

2035-03-09 March 9, 2035
23:05:54
140
Annular
0.992
0:48
-29.0 29°00′S 154°54′W / 29.0°S 154.9°W / -29.0; -154.9
31
19
Annular: New Zealand, Pacific
Partial: Australia, Mexico, Antarctica
[a][8]

2035-09-02 September 2, 2035
01:56:46
145
Total
1.032
2:54
29.1 29°06′N 158°00′E / 29.1°N 158.0°E / 29.1; 158.0
116
72
Total: China, Korea, Japan, Pacific
Partial: east Asia, Pacific
[a][8]

2036-02-27 February 27, 2036
04:46:49
150
Partial
0.629
—
-71.6 71°36′S 131°24′W / 71.6°S 131.4°W / -71.6; -131.4
—
Partial: Antarctica, south Australia, New Zealand
[a][8]

2036-07-23 July 23, 2036
10:32:06
117
Partial
0.199
—
-68.9 68°54′S 3°36′E / 68.9°S 3.6°E / -68.9; 3.6
—
Partial: south Atlantic
[a][8]

2036-08-21 August 21, 2036
17:25:45
155
Partial
0.862
—
71.1 71°06′N 47°00′E / 71.1°N 47.0°E / 71.1; 47.0
—
Partial: Alaska, Canada, Arctic, west Europe, northwest Africa
[a][8]

2037-01-16 January 16, 2037
09:48:55
122
Partial
0.705
—
68.5 68°30′N 20°48′E / 68.5°N 20.8°E / 68.5; 20.8
—
Partial: north Africa, Europe, Mid East, west Asia
[a][8]

2037-07-13 July 13, 2037
02:40:36
127
Total
1.041
3:58
-24.8 24°48′S 139°06′E / 24.8°S 139.1°E / -24.8; 139.1
201
125
Total: Australia, New Zealand
Partial: East Indies, Australia, Pacific
[a][8]

2038-01-05 January 5, 2038
13:47:11
132
Annular
0.973
3:18
02.1 2°06′N 25°24′W / 2.1°N 25.4°W / 2.1; -25.4
107
66
Annular: Cuba, Dominican Republic, Cote d'Ivoire, Ghana, Niger, Chad, Egypt
Partial: east North America, north South America, Atlantic, Africa, Europe
[a][8]

2038-07-02 July 2, 2038
13:32:55
137
Annular
0.991
1:00
25.4 25°24′N 21°54′W / 25.4°N 21.9°W / 25.4; -21.9
31
19
Annular: Colombia, Venezuela, Mauritania, Morocco, Mali, Niger, Chad, Sudan, Ethiopia, Kenya
Partial: North and Central America, South America, Africa, Europe, Mid East
[a][8]

2038-12-26 December 26, 2038
01:00:10
142
Total
1.027
2:18
-40.3 40°18′S 164°00′E / 40.3°S 164.0°E / -40.3; 164.0
95
59
Total: Australia, New Zealand, south Pacific
Partial: southeast Asia, East Indies, Australia, New Zealand, south Pacific, Antarctica
[a][8]

2039-06-21 June 21, 2039
17:12:54
147
Annular
0.945
4:05
78.9 78°54′N 102°06′W / 78.9°N 102.1°W / 78.9; -102.1
365
227
Annular: Alaska, north Canada, Norway, Sweden, Finland, Estonia, Russia
Partial: North America, west Europe
[a][8]

2039-12-15 December 15, 2039
16:23:46
152
Total
1.036
1:51
-80.9 80°54′S 172°48′E / 80.9°S 172.8°E / -80.9; 172.8
380
240
Total: Antarctica
Partial: south South America
[a][8]

2040-05-11 May 11, 2040
03:43:02
119
Partial
0.531
—
-62.8 62°48′S 174°24′E / 62.8°S 174.4°E / -62.8; 174.4
—
Partial: Australia, New Zealand, Antarctica
[a][8]

2040-11-04 November 4, 2040
19:09:02
124
Partial
0.807
—
62.2 62°12′N 53°24′W / 62.2°N 53.4°W / 62.2; -53.4
—
Partial: North and Central America
[a][8]

2041-04-30 April 30, 2041
11:52:21
129
Total
1.019
1:51
-09.6 9°36′S 12°12′E / 9.6°S 12.2°E / -9.6; 12.2
72
45
Total: Angola, Republic of the Congo, Uganda, Kenya, Somalia
Partial: Brazil, Africa, Mid East
[a][9]

2041-10-25 October 25, 2041
01:36:22
134
Annular
0.947
6:07
09.9 9°54′N 162°54′E / 9.9°N 162.9°E / 9.9; 162.9
213
132
Annular: Mongolia, China, Korea, Japan, Pacific
Partial: east Asia, Pacific
[a][9]

2042-04-20 April 20, 2042
02:17:30
139
Total
1.061
4:51
27.0 27°00′N 137°18′E / 27.0°N 137.3°E / 27.0; 137.3
210
130
Total: Malaysia, Indonesia, Philippines, north Pacific
Partial: east and southeast Asia, Australia, Pacific

[a][9]

2042-10-14 October 14, 2042
02:00:42
144
Annular
0.930
7:44
-23.7 23°42′S 137°48′E / 23.7°S 137.8°E / -23.7; 137.8
273
170
Annular: Thailand, Malaysia, Indonesia, Australia, New Zealand
Partial: south-east Asia, East Indies, south Pacific, Antarctica

[a][9]

2043-04-09 April 9, 2043
18:57:49
149
Total (non-central)
1.010
—
61.3 61°18′N 152°00′E / 61.3°N 152.0°E / 61.3; 152.0
—
Total: northeast Russia
Partial: north North America, northeast Asia
[a][9]

2043-10-03 October 3, 2043
03:01:49
154
Annular (non-central)
0.950
—
-61.0 61°00′S 35°18′E / 61.0°S 35.3°E / -61.0; 35.3
—
Annular: south Indian Ocean
Partial: Antarctica, southwest Australia, Indian Ocean
[a][9]

2044-02-28 February 28, 2044
20:24:40
121
Annular
0.960
2:27
-62.2 62°12′S 25°36′W / 62.2°S 25.6°W / -62.2; -25.6
—
Annular: south Atlantic
Partial: Antarctica, South America
[a][9]

2044-08-23 August 23, 2044
01:17:02
126
Total
1.036
2:04
64.3 64°18′N 120°24′W / 64.3°N 120.4°W / 64.3; -120.4
453
281
Total: Greenland; Canada's Northwest Territories and Nunavut, Alberta, southwestern Saskatchewan; Montana, North Dakota
Partial: north Asia, western North America, Greenland

[a][9]

2045-02-16 February 16, 2045
23:56:07
131
Annular
0.928
7:47
-28.3 28°18′S 166°12′W / 28.3°S 166.2°W / -28.3; -166.2
281
175
Annular: New Zealand, Pacific
Partial: Australia, Hawaii

[a][9]

2045-08-12 August 12, 2045
17:42:39
136
Total
1.077
6:06
25.9 25°54′N 78°30′W / 25.9°N 78.5°W / 25.9; -78.5
256
159
Total: south United States, Haiti, Dominican Republic, Venezuela, Guyana, French Guyana, Suriname, Brazil
Partial: North, Central and South America, western Africa

[a][9]

2046-02-05 February 5, 2046
23:06:26
141
Annular
0.923
9:42
04.8 4°48′N 171°24′W / 4.8°N 171.4°W / 4.8; -171.4
310
190
Annular: Papua New Guinea, Hawaii, California, Oregon, Idaho
Partial: Australia, western United States
[a][9]

2046-08-02 August 2, 2046
10:21:13
146
Total
1.053
4:51
-12.7 12°42′S 15°12′E / 12.7°S 15.2°E / -12.7; 15.2
206
128
Total: Brazil, Angola, east Namibia, Botswana, South Africa, Swaziland, south Mozambique
Partial: Africa

[a][9]

2047-01-26 January 26, 2047
01:33:18
151
Partial
0.891
—
62.9 62°54′N 111°42′E / 62.9°N 111.7°E / 62.9; 111.7
—
Partial: east Asia, Alaska
[a][9]

2047-06-23 June 23, 2047
10:52:31
118
Partial
0.313
—
65.8 65°48′N 178°00′W / 65.8°N 178.0°W / 65.8; -178.0
—
Partial: north Canada, Greenland, northeast Asia
[a][9]

2047-07-22 July 22, 2047
22:36:17
156
Partial
0.361
—
-63.4 63°24′S 160°12′E / 63.4°S 160.2°E / -63.4; 160.2
—
Partial: southeast Australia, New Zealand
[a][9]

2047-12-16 December 16, 2047
23:50:12
123
Partial
0.882
—
-66.4 66°24′S 6°36′W / 66.4°S 6.6°W / -66.4; -6.6
—
Partial: Antarctica, south Chile, south Argentina
[a][9]

2048-06-11 June 11, 2048
12:58:53
128
Annular
0.944
4:58
63.7 63°42′N 11°30′W / 63.7°N 11.5°W / 63.7; -11.5
272
169
Annular: midwest United States, Quebec, Ontario, Greenland, Iceland, Norway, Sweden, Russia, Afghanistan
Partial: North America, Caribbean, north Africa, Europe, west Asia

[a][9]

2048-12-05 December 5, 2048
15:35:27
133
Total
1.044
3:28
-46.1 46°06′S 56°24′W / 46.1°S 56.4°W / -46.1; -56.4
160
99
Total: Chile, Argentina, Namibia, Botswana
Partial: south South America, southwest Africa

[a][9]

2049-05-31 May 31, 2049
13:59:59
138
Annular
0.963
4:45
15.3 15°18′N 29°54′W / 15.3°N 29.9°W / 15.3; -29.9
134
83
Annular: Peru, Ecuador, Colombia, Venezuela, Guyana, Senegal, Mali, Burkina Faso, Ghana, Nigeria
Partial: southeast United States, Central America, South America, Africa, south Europe

[a][9]

2049-11-25 November 25, 2049
05:33:48
143
Hybrid
1.006
0:38
-03.8 3°48′S 95°12′E / 3.8°S 95.2°E / -3.8; 95.2
21
13
Hybrid: Saudi Arabia, Yemen, Malaysia, Indonesia
Partial: east Africa, south Asia, East Indies, Australia

[a][9]

2050-05-20 May 20, 2050
20:42:50
148
Hybrid
1.004
0:21
-40.1 40°06′S 123°42′W / 40.1°S 123.7°W / -40.1; -123.7
27
17
Hybrid: south Pacific
Partial: New Zealand, southwest South America

[a][9]

2050-11-14 November 14, 2050
13:30:53
153
Partial
0.887
—
69.5 69°30′N 1°00′E / 69.5°N 1.0°E / 69.5; 1.0
—
Partial: northeast United States, east Canada, north Africa, Europe
[a][9]

2051-04-11 April 11, 2051
02:10:39
120
Partial
0.985
—
71.6 71°36′N 32°12′E / 71.6°N 32.2°E / 71.6; 32.2
—
Partial: Asia, Alaska, Canada, Greenland
[a][10]

2051-10-04 October 4, 2051
21:02:14
125
Partial
0.602
—
-72.0 72°00′S 117°42′E / 72.0°S 117.7°E / -72.0; 117.7
—
Partial: Antarctica, Australia, New Zealand
[a][10]

2052-03-30 March 30, 2052
18:31:53
130
Total
1.047
4:08
22.4 22°24′N 102°30′W / 22.4°N 102.5°W / 22.4; -102.5
164
102
Total: central Pacific, Mexico, United States, central Atlantic
Partial: Central and North America, north South America

[a][10]

2052-09-22 September 22, 2052
23:39:10
135
Annular
0.973
2:51
-25.7 25°42′S 175°00′E / 25.7°S 175.0°E / -25.7; 175.0
106
66
Annular: Australia, south Pacific
Partial: New Zealand, Antarctica, West Indies

[a][10]

2053-03-20 March 20, 2053
07:08:19
140
Annular
0.992
0:50
-23.0 23°00′S 83°00′E / 23.0°S 83.0°E / -23.0; 83.0
31
19
Annular: central Indian Ocean, Indonesia
Partial: Africa, Indies, Australia, Antarctica

[a][10]

2053-09-12 September 12, 2053
09:34:09
145
Total
1.033
3:04
21.5 21°30′N 41°42′E / 21.5°N 41.7°E / 21.5; 41.7
116
72
Total: Spain, Morocco, Algeria, Tunisia, Libya, Egypt, Saudi Arabia, Maldives, Indonesia
Partial: Greenland, Africa, Europe, Asia

[a][10]

2054-03-09 March 9, 2054
12:33:40
150
Partial
0.668
—
-72.0 72°00′S 97°54′E / 72.0°S 97.9°E / -72.0; 97.9
—
Partial: Antarctica, South Africa, Madagascar, Chile
[a][10]

2054-08-03 August 3, 2054
18:04:02
117
Partial
0.066
—
-69.8 69°48′S 121°18′W / 69.8°S 121.3°W / -69.8; -121.3
—
Partial: Antarctica
[a][10]

2054-09-02 September 2, 2054
01:09:34
155
Partial
0.979
—
71.7 71°42′N 82°18′W / 71.7°N 82.3°W / 71.7; -82.3
—
Partial: Asia, United States, Canada, Greenland
[a][10]

2055-01-27 January 27, 2055
17:54:05
122
Partial
0.693
—
69.5 69°30′N 112°12′W / 69.5°N 112.2°W / 69.5; -112.2
—
Partial: Canada, United States, Mexico, Cuba
[a][10]

2055-07-24 July 24, 2055
09:57:50
127
Total
1.036
3:17
-33.3 33°18′S 25°48′E / 33.3°S 25.8°E / -33.3; 25.8
202
126
Total: South Africa
Partial: Africa, Antarctica

[a][10]

2056-01-16 January 16, 2056
22:16:45
132
Annular
0.976
2:52
03.9 3°54′N 153°30′W / 3.9°N 153.5°W / 3.9; -153.5
95
59
Annular: central Pacific, Mexico
Partial: New Zealand, western North America

[a][10]

2056-07-12 July 12, 2056
20:21:59
137
Annular
0.988
1:26
19.4 19°24′N 123°42′W / 19.4°N 123.7°W / 19.4; -123.7
43
27
Annular: central Pacific, Colombia, Ecuador, Peru, Brazil
Partial: south North America, Central America, north South America

[a][10]

2057-01-05 January 5, 2057
09:47:52
142
Total
1.029
2:29
-39.2 39°12′S 35°12′E / 39.2°S 35.2°E / -39.2; 35.2
102
63
Total: southern Atlantic, southern Indian Ocean
Partial: Africa, Antarctica, Australia

[a][10]

2057-07-01 July 1, 2057
23:40:15
147
Annular
0.946
4:23
71.5 71°30′N 176°12′W / 71.5°N 176.2°W / 71.5; -176.2
298
185
Annular: China, Mongolia, Russia, Canada, United States
Partial: Asia, North America

[a][10]

2057-12-26 December 26, 2057
01:14:35
152
Total
1.035
1:50
-84.9 84°54′S 21°48′E / 84.9°S 21.8°E / -84.9; 21.8
355
221
Total: Antarctica
Partial: Australia
[a][10]

2058-05-22 May 22, 2058
10:39:25
119
Partial
0.414
—
-63.5 63°30′S 61°06′E / 63.5°S 61.1°E / -63.5; 61.1
—
Partial: South Africa, Madagascar
[a][10]

2058-06-21 June 21, 2058
00:19:35
157
Partial
0.126
—
65.9 65°54′N 9°54′E / 65.9°N 9.9°E / 65.9; 9.9
—
Partial: Russia, Greenland, Norway, Sweden, Finland
[a][10]

2058-11-16 November 16, 2058
03:23:07
124
Partial
0.764
—
62.9 62°54′N 174°12′E / 62.9°N 174.2°E / 62.9; 174.2
—
Partial: Russia, China, Mongolia, Japan
[a][10]

2059-05-11 May 11, 2059
19:22:16
129
Total
1.024
2:23
-10.7 10°42′S 100°24′W / 10.7°S 100.4°W / -10.7; -100.4
95
59
Total: central Pacific, Ecuador, Peru, Brazil
Partial: North, Central and South America

[a][10]

2059-11-05 November 5, 2059
09:18:15
134
Annular
0.942
7:00
08.7 8°42′N 47°06′E / 8.7°N 47.1°E / 8.7; 47.1
238
148
Annular: France, Libya, Egypt, Sudan, Ethiopia, Eritrea, Somalia, Indonesia
Partial: Africa, Europe, Asia

[a][10]

2060-03-30 April 30, 2060
10:10:00
139
Total
1.066
5:15
28.0 28°00′N 20°54′E / 28.0°N 20.9°E / 28.0; 20.9
222
138
Total: Ivory Coast, Ghana, Togo, Benin, Nigeria, Niger, Chad, Libya, Egypt, Turkey, Kazakhstan, Russia
Partial: Africa, Asia

[a][10]

2060-10-24 October 24, 2060
09:24:10
144
Annular
0.928
8:06
-25.8 25°48′S 28°06′E / 25.8°S 28.1°E / -25.8; 28.1
281
175
Annular: Guinea, Sierra Leone, Liberia, Ivory Coast, Angola, Namibia, Botswana, South Africa
Partial: Africa, Antarctica, South America

[a][10]

2061-04-20 April 20, 2061
02:56:49
149
Total
1.048
2:37
64.5 64°30′N 59°12′E / 64.5°N 59.2°E / 64.5; 59.2
559
347
Total: Kazakhstan, Russia
Partial: Asia, Middle East, North America

[a][11]

2061-10-13 October 13, 2061
10:32:10
154
Annular
0.947
3:41
-62.1 62°06′S 54°24′W / 62.1°S 54.4°W / -62.1; -54.4
743
462
Annular: Antarctica, Argentina, Chile
Partial: South America
[a][11]

2062-03-11 March 11, 2062
04:26:16
121
Partial
0.933
—
-61.0 61°00′S 147°06′W / 61.0°S 147.1°W / -61.0; -147.1
—
Partial: Antarctica, Australia, New Zealand
[a][11]

2062-09-03 September 3, 2062
08:54:27
126
Partial
0.975
—
61.3 61°18′N 150°18′E / 61.3°N 150.3°E / 61.3; 150.3
—
Partial: Greenland, Europe, Asia
[a][11]

2063-02-28 February 28, 2063
07:43:30
131
Annular
0.929
7:41
-25.2 25°12′S 77°42′E / 25.2°S 77.7°E / -25.2; 77.7
280
170
Annular: Indian Ocean, Indonesia, Malaysia, Mindanao, Philippines
Partial: Africa, Indies, southeast Asia, the rest of Philippines, Antarctica, Australia

[a][11]

2063-08-24 August 24, 2063
01:22:11
136
Total
1.075
5:49
25.6 25°36′N 168°24′E / 25.6°N 168.4°E / 25.6; 168.4
252
157
Total: China, Mongolia, Japan, central Pacific
Partial: Asia, central Pacific

[a][11]

2064-02-17 February 17, 2064
07:00:23
141
Annular
0.926
8:56
07.0 7°00′N 69°42′E / 7.0°N 69.7°E / 7.0; 69.7
295
183
Annular: Zaire, Zambia, Tanzania, India, Nepal, Bangladesh, Bhutan, China
Partial: Africa, Asia
[a][11]

2064-08-12 August 12, 2064
17:46:06
146
Total
1.049
4:28
-10.9 10°54′S 96°00′W / 10.9°S 96.0°W / -10.9; -96.0
184
114
Total: Central Pacific, Chile, Argentina
Partial: Americas, Antarctica

[a][11]

2065-02-05 February 5, 2065
09:52:26
151
Partial
0.912
—
62.2 62°12′N 21°54′W / 62.2°N 21.9°W / 62.2; -21.9
—
Partial: North America, Europe, West Asia
[a][11]

2065-07-03 July 3, 2065
17:33:52
118
Partial
0.164
—
64.8 64°48′N 71°54′E / 64.8°N 71.9°E / 64.8; 71.9
—
Partial: northern Europe, Russia
[a][11]

2065-08-02 August 2, 2065
05:34:17
156
Partial
0.490
—
-62.7 62°42′S 46°30′E / 62.7°S 46.5°E / -62.7; 46.5
—
Partial: Antarctica, South Africa, Madagascar
[a][11]

2065-12-27 December 27, 2065
08:39:56
123
Partial
0.877
—
-65.4 65°24′S 149°12′W / 65.4°S 149.2°W / -65.4; -149.2
—
Partial: Chile, Argentina, Antarctica, Australia
[a][11]

2066-06-22 June 22, 2066
19:25:48
128
Annular
0.943
4:40
70.1 70°06′N 96°24′W / 70.1°N 96.4°W / 70.1; -96.4
309
192
Annular: Russia, Alaska, Canada
Partial: North America, northern Europe, north Asia
[a][11]

2066-12-17 December 17, 2066
00:23:40
133
Total
1.042
3:14
-47.4 47°24′S 175°48′E / 47.4°S 175.8°E / -47.4; 175.8
152
94
Total: Australia, New Zealand, south Pacific
Partial: Australia, Antarctica, New Zealand
[a][11]

2067-06-11 June 11, 2067
20:42:26
138
Annular
0.967
4:05
21.0 21°00′N 130°12′W / 21.0°N 130.2°W / 21.0; -130.2
119
74
Annular: central Pacific, Ecuador, Peru
Partial: Americas
[a][11]

2067-12-06 December 6, 2067
14:03:43
143
Hybrid
1.001
0:08
-06.0 6°00′S 32°24′W / 6.0°S 32.4°W / -6.0; -32.4
4
2.5
Hybrid: Honduras, Nicaragua, Colombia, Venezuela, Guyana, Brazil, Nigeria, Cameroon, Chad, Sudan
Partial: Americas, Africa, south Europe

[a][11]

2068-05-31 May 31, 2068
03:56:39
148
Total
1.011
1:06
-31.0 31°00′S 123°12′E / 31.0°S 123.2°E / -31.0; 123.2
63
39
Total: Australia, New Zealand
Partial: Indies, Australia, Antarctica
[a][11]

2068-11-24 November 24, 2068
21:32:30
153
Partial
0.911
—
68.5 68°30′N 131°06′W / 68.5°N 131.1°W / 68.5; -131.1
—
Partial: North America, Russia
[a][11]

2069-04-21 April 21, 2069
10:11:09
120
Partial
0.899
—
71.0 71°00′N 101°18′W / 71.0°N 101.3°W / 71.0; -101.3
—
Partial: Europe, Asia, north Africa, North America
[a][11]

2069-05-20 May 20, 2069
17:53:18
158
Partial
0.088
—
-68.8 68°48′S 69°54′W / 68.8°S 69.9°W / -68.8; -69.9
—
Partial: South America, Antarctica
[a][11]

2069-10-15 October 15, 2069
04:19:56
125
Partial
0.530
—
-71.6 71°36′S 5°30′W / 71.6°S 5.5°W / -71.6; -5.5
—
Partial: Antarctica
[a][11]

2070-04-11 April 11, 2070
02:36:09
130
Total
1.047
4:04
29.1 29°06′N 135°06′E / 29.1°N 135.1°E / 29.1; 135.1
168
104
Total: Sri Lanka, Myanmar, Thailand, Laos, Vietnam, Philippines
Partial: Asia, Indies, Alaska, Canada
[a][11]

2070-10-04 October 4, 2070
07:08:57
135
Annular
0.973
2:44
-32.8 32°48′S 60°24′E / 32.8°S 60.4°E / -32.8; 60.4
110
68
Annular: Angola, Zambia, Zimbabwe, Mozambique, Madagascar
Partial: Africa, Antarctica, Australia

[a][11]

2071-03-31 March 31, 2071
15:01:06
140
Annular
0.992
0:52
-16.7 16°42′S 37°00′W / 16.7°S 37.0°W / -16.7; -37.0
31
19
Annular: Chile, Argentina, Paraguay, Brazil, Republic of the Congo, Zaire
Partial: South America, Africa, Antarctica

[a][12]

2071-09-23 September 23, 2071
17:20:28
145
Total
1.033
3:11
14.2 14°12′N 76°42′W / 14.2°N 76.7°W / 14.2; -76.7
116
72
Total: Mexico, Colombia, Venezuela, Guyana, Suriname, French Guiana, Brazil
Partial: Americas, Africa

[a][12]

2072-03-19 March 19, 2072
20:10:31
150
Partial
0.720
—
-72.2 72°12′S 30°24′W / 72.2°S 30.4°W / -72.2; -30.4
—
Partial: Antarctica, South America
[a][12]

2072-09-12 September 12, 2072
08:59:20
155
Total
1.056
3:13
69.8 69°48′N 102°00′E / 69.8°N 102.0°E / 69.8; 102.0
732
455
Total: Russia
Partial: Greenland, Europe, Asia
[a][12]

2073-02-07 February 7, 2073
01:55:59
122
Partial
0.677
—
70.5 70°30′N 114°54′E / 70.5°N 114.9°E / 70.5; 114.9
—
Partial: Asia, Alaska
[a][12]

2073-08-03 August 3, 2073
17:15:23
127
Total
1.029
2:29
-43.2 43°12′S 89°24′W / 43.2°S 89.4°W / -43.2; -89.4
206
128
Total: Chile, Argentina
Partial: South America, Antarctica
[a][12]

2074-01-27 January 27, 2074
06:44:15
132
Annular
0.980
2:21
06.6 6°36′N 78°48′E / 6.6°N 78.8°E / 6.6; 78.8
79
49
Annular: Sudan, Ethiopia, Somalia, Sri Lanka, Myanmar, Thailand, Laos, Vietnam, China, Japan
Partial: Africa, Asia, Indies
[a][12]

2074-07-24 July 24, 2074
03:10:32
137
Annular
0.984
1:57
12.8 12°48′N 133°42′E / 12.8°N 133.7°E / 12.8; 133.7
58
36
Annular: Thailand, Cambodia, Vietnam, Philippines
Partial: Asia, Indies, Australia, New Zealand
[a][12]

2075-01-16 January 16, 2075
18:36:04
142
Total
1.031
2:42
-37.2 37°12′S 94°06′W / 37.2°S 94.1°W / -37.2; -94.1
110
68
Total: Chile, Argentina, Paraguay, Brazil
Partial: New Zealand, South America, Antarctica
[a][12]

2075-07-13 July 13, 2075
06:05:44
147
Annular
0.947
4:45
63.1 63°06′N 95°12′E / 63.1°N 95.2°E / 63.1; 95.2
262
163
Annular: south Europe, Russia
Partial: Europe, Asia, Africa, north North America
[a][12]

2076-01-06 January 6, 2076
10:07:27
152
Total
1.034
1:49
-87.2 87°12′S 173°42′W / 87.2°S 173.7°W / -87.2; -173.7
340
210
Total: Antarctica
Partial: Australia, South America
[a][12]

2076-06-01 June 1, 2076
17:31:22
119
Partial
0.290
—
-64.4 64°24′S 51°12′W / 64.4°S 51.2°W / -64.4; -51.2
—
Partial: South America, Antarctica
[a][12]

2076-07-01 July 1, 2076
06:50:43
157
Partial
0.275
—
67.0 67°00′N 98°06′W / 67.0°N 98.1°W / 67.0; -98.1
—
Partial: Russia, North America
[a][12]

2076-11-26 November 26, 2076
11:43:01
124
Partial
0.731
—
63.7 63°42′N 40°06′E / 63.7°N 40.1°E / 63.7; 40.1
—
Partial: Africa, Europe, west Asia
[a][12]

2077-05-22 May 22, 2077
02:46:05
129
Total
1.029
2:54
-13.1 13°06′S 148°18′E / 13.1°S 148.3°E / -13.1; 148.3
119
74
Total: Australia
Partial: Indies, Australia, New Zealand, Antarctica
[a][12]

2077-11-15 November 15, 2077
17:07:56
134
Annular
0.937
7:54
07.8 7°48′N 70°48′W / 7.8°N 70.8°W / 7.8; -70.8
262
163
Annular: United States, Caribbean, Colombia, Venezuela, Brazil, Guyana, Suriname, French Guiana
Partial: Americas

[a][12]

2078-05-11 May 11, 2078
17:56:55
139
Total
1.070
5:40
28.1 28°06′N 93°42′W / 28.1°N 93.7°W / 28.1; -93.7
232
144
Total: Mexico, United States
Partial: Americas
[a][12]

2078-11-04 November 4, 2078
16:55:44
144
Annular
0.926
8:29
-27.8 27°48′S 83°18′W / 27.8°S 83.3°W / -27.8; -83.3
287
178
Annular: Chile, Argentina
Partial: Americas, Antarctica
[a][12]

2079-05-01 May 1, 2079
10:50:13
149
Total
1.051
2:55
66.2 66°12′N 46°18′W / 66.2°N 46.3°W / 66.2; -46.3
406
252
Total: United States, Canada, Greenland
Partial: west Americas, Europe, Africa, Asia
[a][12]

2079-10-24 October 24, 2079
18:11:21
154
Annular
0.948
3:39
-63.4 63°24′S 160°36′W / 63.4°S 160.6°W / -63.4; -160.6
495
308
Annular: Antarctica, New Zealand
Partial: South America
[a][12]

2080-03-21 March 21, 2080
12:20:15
121
Partial
0.873
—
-60.9 60°54′S 85°54′E / 60.9°S 85.9°E / -60.9; 85.9
—
Partial: Antarctica, Africa
[a][12]

2080-09-13 September 13, 2080
16:38:09
126
Partial
0.874
—
61.1 61°06′N 25°48′E / 61.1°N 25.8°E / 61.1; 25.8
—
Partial: North America, Europe, Africa
[a][12]

2081-03-10 March 10, 2081
15:23:31
131
Annular
0.930
7:36
-22.4 22°24′S 36°42′W / 22.4°S 36.7°W / -22.4; -36.7
277
172
Annular: Chile, Argentina, Ivory Coast, Ghana, Togo, Benin, Nigeria, Cameroon
Partial: South America, Africa, Antarctica
[a][13]

2081-09-03 September 3, 2081
09:07:31
136
Total
1.072
5:33
24.6 24°36′N 53°36′E / 24.6°N 53.6°E / 24.6; 53.6
247
153
Total: Central Europe, France, Switzerland, Austria, Slovenia, Hungary, Croatia, Serbia, Romania, Greece, Bulgaria, Turkey, Syria, Iraq, Kuwait, Qatar, UAE, Saudi Arabia, Oman
Partial: Africa, Europe, Asia
[a][13]

2082-02-27 February 27, 2082
14:47:00
141
Annular
0.930
8:12
09.4 9°24′N 47°06′W / 9.4°N 47.1°W / 9.4; -47.1
277
172
Annular: Peru, Brazil, Suriname, French Guiana, Portugal, Spain, France, Italy, Germany, Austria
Partial: Americas, Europe, Africa
[a][13]

2082-08-24 August 24, 2082
01:16:21
146
Total
1.045
4:01
-10.3 10°18′S 151°48′E / 10.3°S 151.8°E / -10.3; 151.8
163
101
Total: Indonesia, New Guinea, South Pacific
Partial: Indies, Australia, Antarctica, New Zealand
[a][13]

2083-02-16 February 16, 2083
18:06:36
151
Partial
0.943
—
61.6 61°36′N 154°06′W / 61.6°N 154.1°W / 61.6; -154.1
—
Partial: Mexico, United States, Canada
[a][13]

2083-07-15 July 15, 2083
00:14:23
118
Partial
0.017
—
64.0 64°00′N 37°42′W / 64.0°N 37.7°W / 64.0; -37.7
—
Partial: Greenland
[a][13]

2083-08-13 August 13, 2083
12:34:41
156
Partial
0.615
—
-62.1 62°06′S 67°30′W / 62.1°S 67.5°W / -62.1; -67.5
—
Partial: South America, Antarctica
[a][13]

2084-01-07 January 7, 2084
17:30:23
123
Partial
0.872
—
-64.4 64°24′S 68°30′E / 64.4°S 68.5°E / -64.4; 68.5
—
Partial: Antarctica, South America
[a][13]

2084-07-03 July 3, 2084
01:50:26
128
Annular
0.942
4:25
75.0 75°00′N 169°06′W / 75.0°N 169.1°W / 75.0; -169.1
377
234
Annular: Russia, United States, Canada
Partial: northern Europe, Asia, North America
[a][13]

2084-12-27 December 27, 2084
09:13:48
133
Total
1.040
3:04
-47.3 47°18′S 47°42′E / 47.3°S 47.7°E / -47.3; 47.7
146
91
Total: South Atlantic, Indian Ocean
Partial: Africa, Antarctica, Australia
[a][13]

2085-06-22 June 22, 2085
03:21:16
138
Annular
0.970
3:29
26.2 26°12′N 131°18′E / 26.2°N 131.3°E / 26.2; 131.3
106
66
Annular: India, Myanmar, China, central Pacific
Partial: Asia, Indies, Australia
[a][13]

2085-12-16 December 16, 2085
22:37:48
143
Annular
0.997
0:19
-07.3 7°18′S 160°48′W / 7.3°S 160.8°W / -7.3; -160.8
10
6.2
Annular: central Pacific
Partial: Australia, North America
[a][13]

2086-06-11 June 11, 2086
11:07:14
148
Total
1.017
1:48
-23.2 23°12′S 12°30′E / 23.2°S 12.5°E / -23.2; 12.5
86
53
Total: Namibia, Botswana, South Africa
Partial: South America, Africa
[a][13]

2086-12-06 December 6, 2086
05:38:55
153
Partial
0.927
—
67.4 67°24′N 96°12′E / 67.4°N 96.2°E / 67.4; 96.2
—
Partial: Asia
[a][13]

2087-05-02 May 2, 2087
18:04:42
120
Partial
0.801
—
70.3 70°18′N 127°36′E / 70.3°N 127.6°E / 70.3; 127.6
—
Partial: north Europe, north Asia, North America
[a][13]

2087-06-01 June 1, 2087
01:27:14
158
Partial
0.215
—
-67.8 67°48′S 165°24′E / 67.8°S 165.4°E / -67.8; 165.4
—
Partial: New Zealand
[a][13]

2087-10-26 October 26, 2087
11:46:57
125
Partial
0.470
—
-71.0 71°00′S 130°30′W / 71.0°S 130.5°W / -71.0; -130.5
—
Partial: South America, Antarctica
[a][13]

2088-04-21 April 21, 2088
10:31:49
130
Total
1.047
3:58
36.0 36°00′N 15°06′E / 36.0°N 15.1°E / 36.0; 15.1
173
107
Total: Mauritania, western Sahara, Mali, Algeria, Tunisia, Greece, Turkey, Russia, Kazakhstan, China
Partial: North America, Africa, Europe, Asia
[a][13]

2088-10-14 October 14, 2088
14:48:05
135
Annular
0.973
2:38
-39.7 39°42′S 56°00′W / 39.7°S 56.0°W / -39.7; -56.0
115
71
Annular: Chile, Argentina
Partial: South America, Antarctica, Africa
[a][13]

2089-04-10 April 10, 2089
22:44:42
140
Annular
0.992
0:53
-10.2 10°12′S 154°48′W / 10.2°S 154.8°W / -10.2; -154.8
30
19
Annular: Australia, central Pacific
Partial: Antarctica, North America
[a][13]

2089-10-04 October 4, 2089
01:15:23
145
Total
1.033
3:14
07.4 7°24′N 162°48′E / 7.4°N 162.8°E / 7.4; 162.8
115
71
Total: China, Central Pacific
Partial: Asia, Indies, Australia
[a][13]

2090-03-31 March 31, 2090
03:38:08
150
Partial
0.784
—
-72.1 72°06′S 156°18′W / 72.1°S 156.3°W / -72.1; -156.3
—
Partial: Antarctica, Australia, New Zealand
[a][13]

2090-09-23 September 23, 2090
16:56:36
155
Total
1.056
3:36
60.7 60°42′N 40°30′W / 60.7°N 40.5°W / 60.7; -40.5
463
288
Total: Canada, Greenland, United Kingdom, France
Partial: North America, Europe, Africa, north Asia
[a][13]

2091-02-18 February 18, 2091
09:54:40
122
Partial
0.656
—
71.2 71°12′N 17°48′W / 71.2°N 17.8°W / 71.2; -17.8
—
Partial: North Africa, Europe, Asia
[a][14]

2091-08-15 August 15, 2091
00:34:43
127
Total
1.022
1:38
-55.6 55°36′S 150°30′E / 55.6°S 150.5°E / -55.6; 150.5
236
147
Total: southern Antarctic Ocean, near Antarctica
Partial: Australia, Antarctica, New Zealand

[a][14]

2092-02-07 February 7, 2092
15:10:20
132
Annular
0.984
1:48
09.9 9°54′N 48°42′W / 9.9°N 48.7°W / 9.9; -48.7
62
39
Annular: Panama, Colombia, Venezuela, Guyana, Morocco, Algeria
Partial: Americas, Europe, Africa
[a][14]

2092-08-03 August 3, 2092
09:59:33
137
Annular
0.979
2:31
05.6 5°36′N 30°18′E / 5.6°N 30.3°E / 5.6; 30.3
75
47
Annular: Liberia, Ivory Coast, Ghana, Togo, Benin, Nigeria, Cameroon, Chad, Central African Republic, Sudan, Kenya, Somalia
Partial: Africa
[a][14]

2093-01-27 January 27, 2093
03:22:16
142
Total
1.034
2:58
-34.1 34°06′S 136°24′E / 34.1°S 136.4°E / -34.1; 136.4
119
74
Total: Australia
Partial: Indies, Australia, Antarctica, New Zealand
[a][14]

2093-07-23 July 23, 2093
12:32:04
147
Annular
0.946
5:11
54.6 54°36′N 1°18′E / 54.6°N 1.3°E / 54.6; 1.3
241
150
Annular: United States, Canada, Central Europe, Turkey, Iraq, Iran, Afghanistan, Pakistan
Partial: Americas, Europe, Africa, Asia

[a][14]

2094-01-16 January 16, 2094
18:59:03
152
Total
1.034
1:51
-84.8 84°48′S 10°36′W / 84.8°S 10.6°W / -84.8; -10.6
329
204
Total: Antarctica
Partial: South America, Antarctica, New Zealand
[a][14]

2094-06-13 June 13, 2094
00:22:11
119
Partial
0.162
—
-65.3 65°18′S 163°36′W / 65.3°S 163.6°W / -65.3; -163.6
—
Partial: southern Antarctic Ocean, near Antarctica
[a][14]

2094-07-12 July 12, 2094
13:24:35
157
Partial
0.422
—
68.0 68°00′N 152°48′E / 68.0°N 152.8°E / 68.0; 152.8
—
Partial: North America, Asia
[a][14]

2094-12-07 December 7, 2094
20:05:56
124
Partial
0.705
—
64.7 64°42′N 95°00′W / 64.7°N 95.0°W / 64.7; -95.0
—
Partial: North America
[a][14]

2095-06-02 June 2, 2095
10:07:40
129
Total
1.033
3:18
-16.7 16°42′S 37°12′E / 16.7°S 37.2°E / -16.7; 37.2
145
90
Total: Namibia, South Africa, Botswana, Zambia, Mozambique, Madagascar
Partial: Africa

[a][14]

2095-11-27 November 27, 2095
01:02:57
134
Annular
0.933
8:47
07.2 7°12′N 169°48′E / 7.2°N 169.8°E / 7.2; 169.8
285
177
Annular: China, Korea, Japan, central Pacific
Partial: Asia, Indies, Australia

[a][14]

2096-05-22 May 22, 2096
01:37:14
139
Total
1.074
6:07
27.3 27°18′N 153°24′E / 27.3°N 153.4°E / 27.3; 153.4
241
150
Total: Indonesia, Central Pacific, Philippines
Partial: Asia, Indies, Australia, North America
[a][14]

2096-11-15 November 15, 2096
00:36:15
144
Annular
0.924
8:53
-29.7 29°42′S 163°18′E / 29.7°S 163.3°E / -29.7; 163.3
294
183
Annular: Malaysia, Indonesia, New Guinea, Australia, New Zealand
Partial: Indies, Antarctica
[a][14]

2097-05-11 May 11, 2097
18:34:31
149
Total
1.054
3:10
67.4 67°24′N 149°30′W / 67.4°N 149.5°W / 67.4; -149.5
339
211
Total: Alaska, Russia
Partial: Asia, North America, northern Europe
[a][14]

2097-11-04 November 4, 2097
02:01:25
154
Annular
0.949
3:36
-65.8 65°48′S 86°48′E / 65.8°S 86.8°E / -65.8; 86.8
411
255
Annular: Antarctica
Partial: Australia
[a][14]

2098-04-01 April 1, 2098
20:02:31
121
Partial
0.798
—
-61.0 61°00′S 38°06′W / 61.0°S 38.1°W / -61.0; -38.1
—
Partial: Antarctica, South America
[a][14]

2098-09-25 September 25, 2098
00:31:16
126
Partial
0.787
—
61.1 61°06′N 101°00′W / 61.1°N 101.0°W / 61.1; -101.0
—
Partial: Asia, North America
[a][14]

2098-10-24 October 24, 2098
10:36:11
164
Partial
0.006
—
-61.8 61°48′S 95°30′W / 61.8°S 95.5°W / -61.8; -95.5
—
Partial: southern Antarctic Ocean, near Antarctica
[a][14]

2099-03-21 March 21, 2099
22:54:32
131
Annular
0.932
7:32
-20.0 20°00′S 149°00′W / 20.0°S 149.0°W / -20.0; -149.0
275
171
Annular: central Pacific
Partial: Australia, New Zealand, Antarctica, North America
[a][14]

2099-09-14 September 14, 2099
16:57:53
136
Total
1.068
5:18
23.4 23°24′N 62°48′W / 23.4°N 62.8°W / 23.4; -62.8
241
150
Total: Canada, United States, central Atlantic
Partial: Americas, Africa

[a][14]

2100-03-10 March 10, 2100
22:28:11
141
Annular
0.934
7:29
12.0 12°00′N 162°24′W / 12.0°N 162.4°W / 12.0; -162.4
257
160
Annular: central Pacific, Hawaii, Northwestern United States
Partial: Australia, North America
[a][14]

2100-09-04 September 4, 2100
08:49:20
146
Total
1.040
3:32
-10.5 10°30′S 39°00′E / 10.5°S 39.0°E / -10.5; 39.0
142
88
Total: central Africa, Madagascar
Partial: Africa, Antarctica
[a][14]


document_title: Cell cycle

question_text: when does the dna replicate in a cell cycle

root

text: Cell cycle

text: Phases[edit]

text: The cell cycle consists of four distinct phases: G1 phase, S phase (synthesis), G2 phase (collectively known as interphase) and M phase (mitosis). M phase is itself composed of two tightly coupled processes: karyokinesis, in which the cell's chromosomes are divided, and cytokinesis, in which the cell's cytoplasm divides forming two daughter cells. Activation of each phase is dependent on the proper progression and completion of the previous one. Cells that have temporarily or reversibly stopped dividing are said to have entered a state of quiescence called G0 phase.

tag: p

text:
State
Phase
Abbreviation
Description

Resting
Gap 0
G0
A phase where the cell has left the cycle and has stopped dividing.

Interphase
Gap 1
G1
Cells increase in size in Gap 1. The G1 checkpoint control mechanism ensures that everything is ready for DNA synthesis.

Synthesis
S
DNA replication occurs during this phase.

Gap 2
G2
During the gap between DNA synthesis and mitosis, the cell will continue to grow. The G2 checkpoint control mechanism ensures that everything is ready to enter the M (mitosis) phase and divide.

Cell division
Mitosis
M
Cell growth stops at this stage and cellular energy is focused on the orderly division into two daughter cells. A checkpoint in the middle of mitosis (Metaphase Checkpoint) ensures that the cell is ready to complete cell division.

tag: table

text: After cell division, each of the daughter cells begin the interphase of a new cycle. Although the various stages of interphase are not usually morphologically distinguishable, each phase of the cell cycle has a distinct set of specialized biochemical processes that prepare the cell for initiation of cell division.

text: G0 phase (quiescence)[edit]

text: G0 is a resting phase where the cell has left the cycle and has stopped dividing. The cell cycle starts with this phase. The word "post-mitotic" is sometimes used to refer to both quiescent and senescent cells. Non proliferative (non-dividing) cells in multicellular eukaryotes generally enter the quiescent G0 state from G1 and may remain quiescent for long periods of time, possibly indefinitely (as is often the case for neurons). This is very common for cells that are fully differentiated. Cellular senescence occurs in response to DNA damage and external stress and usually constitutes an arrest in G1. Some cells enter the G0 phase semi-permanently, and are considered post-mitotic e.g., some liver, kidney, stomach cells. Many cells do not enter G0 and continue to divide throughout an organism's life, e.g. epithelial cells.

text: Cellular senescence is also a state that occurs in response to DNA damage or degradation that would make a cell's progeny nonviable; it is often a biochemical alternative to the self-destruction of such a damaged cell by apoptosis.

text: Interphase (intermitosis)[edit]

text: Before a cell can enter cell division, it needs to take in nutrients. All of the preparations are done during interphase. Interphase is a series of changes that takes place in a newly formed cell and its nucleus, before it becomes capable of division again. It is also called preparatory phase or intermitosis. Previously it was called resting stage because there is no apparent activity related to cell division.Typically interphase lasts for at least 90% of the total time required for the cell cycle.

text: Interphase proceeds in three stages, G1, S, and G2, followed by the cycle of mitosis and cytokinesis. The cell's nuclear DNA contents are duplicated during S phase.

text: G1 phase (First growth phase or Post mitotic gap phase)[edit]

text: The first phase within interphase, from the end of the previous M phase until the beginning of DNA synthesis, is called G1 (G indicating gap). It is also called the growth phase. During this phase, the biosynthetic activities of the cell, which are considerably slowed down during M phase, resume at a high rate. The duration of G1 is highly variable, even among different cells of the same species.[3] In this phase, the cell increases its supply of proteins, increases the number of organelles (such as mitochondria, ribosomes), and grows in size. In G1 phase, a cell has three options. (1) To continue cell cycle and enter S phase (2) Stop cell cycle and enter G0 phase for undergoing differentiation. (3) Get arrested in G1 phase hence it may enter G0 phase or re-enter cell cycle. The deciding factor is availability of nitrogens and storage of energy rich compunds at the deciding point called check point. This check point is called G1 cyclin or CG1. It causes transition of G1 to S phase. Once the check point of G1 phase is crossed, cell cycle will go uninterrupted till it is completed.

text: S phase (DNA replication)[edit]

text: The ensuing S phase starts when DNA synthesis commences; when it is complete, all of the chromosomes have been replicated, i.e., each chromosome has two (sister) chromatids. Thus, during this phase, the amount of DNA in the cell has effectively doubled, though the ploidy of the cell remains the same. Rates of RNA transcription and protein synthesis are very low during this phase. An exception to this is histone production, most of which occurs during the S phase.[4][5][6]

text: G2 phase (growth)[edit]

text: G2 phase occurs after DNA replication and is a period of protein synthesis and rapid cell growth to prepare the cell for mitosis. During this phase microtubules begin to reorganize to form a spindle.

text: Mitotic phase (chromosome separation)[edit]

text: The relatively brief M phase consists of nuclear division (karyokinesis). It is a relatively short period of the cell cycle. M phase is complex and highly regulated. The sequence of events is divided into phases, corresponding to the completion of one set of activities and the start of the next. These phases are sequentially known as:

text:
prophase,
metaphase,
anaphase,
telophase

tag: ul

text: Mitosis is the process by which a eukaryotic cell separates the chromosomes in its cell nucleus into two identical sets in two nuclei.[7] During the process of mitosis the pairs of chromosomes condense and attach to fibers that pull the sister chromatids to opposite sides of the cell.[8]

text: Mitosis occurs exclusively in eukaryotic cells, but occurs in different ways in different species. For example, animals undergo an "open" mitosis, where the nuclear envelope breaks down before the chromosomes separate, while fungi such as Aspergillus nidulans and Saccharomyces cerevisiae (yeast) undergo a "closed" mitosis, where chromosomes divide within an intact cell nucleus.[9] Prokaryotic cells, which lack a nucleus, divide by a process called binary fission.

text: Cytokinesis phase (separation of all cell components)[edit]

text: Mitosis is immediately followed by cytokinesis, which divides the nuclei, cytoplasm, organelles and cell membrane into two cells containing roughly equal shares of these cellular components. Mitosis and cytokinesis together define the division of the mother cell into two daughter cells, genetically identical to each other and to their parent cell. This accounts for approximately 10% of the cell cycle.

text: Because cytokinesis usually occurs in conjunction with mitosis, "mitosis" is often used interchangeably with "M phase". However, there are many cells where mitosis and cytokinesis occur separately, forming single cells with multiple nuclei in a process called endoreplication. This occurs most notably among the fungi and slime moulds, but is found in various groups. Even in animals, cytokinesis and mitosis may occur independently, for instance during certain stages of fruit fly embryonic development.[10] Errors in mitosis can either kill a cell through apoptosis or cause mutations that may lead to cancer.

text: The process of mitosis is complex and highly regulated. The sequence of events is divided into phases, corresponding to the completion of one set of activities and the start of the next. These stages are prophase, prometaphase, metaphase, anaphase and telophase. During the process of mitosis the pairs of chromosomes condense and attach to fibers that pull the sister chromatids to opposite sides of the cell. The cell then divides in cytokinesis, to produce two identical daughter cells.[8]

text: Regulation of eukaryotic cell cycle[edit]

text: Regulation of the cell cycle involves processes crucial to the survival of a cell, including the detection and repair of genetic damage as well as the prevention of uncontrolled cell division. The molecular events that control the cell cycle are ordered and directional; that is, each process occurs in a sequential fashion and it is impossible to "reverse" the cycle.

text: Role of cyclins and CDKs[edit]

text: Two key classes of regulatory molecules, cyclins and cyclin-dependent kinases (CDKs), determine a cell's progress through the cell cycle.[11] Leland H. Hartwell, R. Timothy Hunt, and Paul M. Nurse won the 2001 Nobel Prize in Physiology or Medicine for their discovery of these central molecules.[12] Many of the genes encoding cyclins and CDKs are conserved among all eukaryotes, but in general more complex organisms have more elaborate cell cycle control systems that incorporate more individual components. Many of the relevant genes were first identified by studying yeast, especially Saccharomyces cerevisiae;[13] genetic nomenclature in yeast dubs many of these genes cdc (for "cell division cycle") followed by an identifying number, e.g. cdc25 or cdc20.

text: Cyclins form the regulatory subunits and CDKs the catalytic subunits of an activated heterodimer; cyclins have no catalytic activity and CDKs are inactive in the absence of a partner cyclin. When activated by a bound cyclin, CDKs perform a common biochemical reaction called phosphorylation that activates or inactivates target proteins to orchestrate coordinated entry into the next phase of the cell cycle. Different cyclin-CDK combinations determine the downstream proteins targeted. CDKs are constitutively expressed in cells whereas cyclins are synthesised at specific stages of the cell cycle, in response to various molecular signals.[14]

text: General mechanism of cyclin-CDK interaction[edit]

text: Upon receiving a pro-mitotic extracellular signal, G1 cyclin-CDK complexes become active to prepare the cell for S phase, promoting the expression of transcription factors that in turn promote the expression of S cyclins and of enzymes required for DNA replication. The G1 cyclin-CDK complexes also promote the degradation of molecules that function as S phase inhibitors by targeting them for ubiquitination. Once a protein has been ubiquitinated, it is targeted for proteolytic degradation by the proteasome. However, results from a recent study of E2F transcriptional dynamics at the single-cell level argue that the role of G1 cyclin-CDK activities, in particular cyclin D-CDK4/6, is to tune the timing rather than the commitment of cell cycle entry.[15]

text: Active S cyclin-CDK complexes phosphorylate proteins that make up the pre-replication complexes assembled during G1 phase on DNA replication origins. The phosphorylation serves two purposes: to activate each already-assembled pre-replication complex, and to prevent new complexes from forming. This ensures that every portion of the cell's genome will be replicated once and only once. The reason for prevention of gaps in replication is fairly clear, because daughter cells that are missing all or part of crucial genes will die. However, for reasons related to gene copy number effects, possession of extra copies of certain genes is also deleterious to the daughter cells.

text: Mitotic cyclin-CDK complexes, which are synthesized but inactivated during S and G2 phases, promote the initiation of mitosis by stimulating downstream proteins involved in chromosome condensation and mitotic spindle assembly. A critical complex activated during this process is a ubiquitin ligase known as the anaphase-promoting complex (APC), which promotes degradation of structural proteins associated with the chromosomal kinetochore. APC also targets the mitotic cyclins for degradation, ensuring that telophase and cytokinesis can proceed.[16]

text: Specific action of cyclin-CDK complexes[edit]

text: Cyclin D is the first cyclin produced in the cell cycle, in response to extracellular signals (e.g. growth factors). Cyclin D binds to existing CDK4, forming the active cyclin D-CDK4 complex. Cyclin D-CDK4 complex in turn phosphorylates the retinoblastoma susceptibility protein (Rb). The hyperphosphorylated Rb dissociates from the E2F/DP1/Rb complex (which was bound to the E2F responsive genes, effectively "blocking" them from transcription), activating E2F. Activation of E2F results in transcription of various genes like cyclin E, cyclin A, DNA polymerase, thymidine kinase, etc. Cyclin E thus produced binds to CDK2, forming the cyclin E-CDK2 complex, which pushes the cell from G1 to S phase (G1/S, which initiates the G2/M transition).[17] Cyclin B-cdk1 complex activation causes breakdown of nuclear envelope and initiation of prophase, and subsequently, its deactivation causes the cell to exit mitosis.[14] A quantitative study of E2F transcriptional dynamics at the single-cell level by using engineered fluorescent reporter cells provided a quantitative framework for understanding the control logic of cell cycle entry, challenging the canonical textbook model. Genes that regulate the amplitude of E2F accumulation, such as Myc, determine the commitment into cell cycle and S phase entry. G1 cyclin-CDK activities are not the driver of cell cycle entry. Instead, they primarily tune the timing of E2F increase, thereby modulating the pace of cell cycle progression.[15]

text: Inhibitors[edit]

text: Two families of genes, the cip/kip (CDK interacting protein/Kinase inhibitory protein) family and the INK4a/ARF (Inhibitor of Kinase 4/Alternative Reading Frame) family, prevent the progression of the cell cycle. Because these genes are instrumental in prevention of tumor formation, they are known as tumor suppressors.

text: The cip/kip family includes the genes p21, p27 and p57. They halt cell cycle in G1 phase, by binding to, and inactivating, cyclin-CDK complexes. p21 is activated by p53 (which, in turn, is triggered by DNA damage e.g. due to radiation). p27 is activated by Transforming Growth Factor of β (TGF β), a growth inhibitor.

text: The INK4a/ARF family includes p16INK4a, which binds to CDK4 and arrests the cell cycle in G1 phase, and p14ARF which prevents p53 degradation.

text: Synthetic inhibitors of Cdc25 could also be useful for the arrest of cell cycle and therefore be useful as antineoplastic and anticancer agents.[18]

text: Transcriptional regulatory network[edit]

text: Current evidence suggests that a semi-autonomous transcriptional network acts in concert with the CDK-cyclin machinery to regulate the cell cycle. Several gene expression studies in Saccharomyces cerevisiae have identified 800–1200 genes that change expression over the course of the cell cycle.[13][19][20] They are transcribed at high levels at specific points in the cell cycle, and remain at lower levels throughout the rest of the cycle. While the set of identified genes differs between studies due to the computational methods and criteria used to identify them, each study indicates that a large portion of yeast genes are temporally regulated.[21]

text: Many periodically expressed genes are driven by transcription factors that are also periodically expressed. One screen of single-gene knockouts identified 48 transcription factors (about 20% of all non-essential transcription factors) that show cell cycle progression defects.[22] Genome-wide studies using high throughput technologies have identified the transcription factors that bind to the promoters of yeast genes, and correlating these findings with temporal expression patterns have allowed the identification of transcription factors that drive phase-specific gene expression.[19][23] The expression profiles of these transcription factors are driven by the transcription factors that peak in the prior phase, and computational models have shown that a CDK-autonomous network of these transcription factors is sufficient to produce steady-state oscillations in gene expression).[20][24]

text: Experimental evidence also suggests that gene expression can oscillate with the period seen in dividing wild-type cells independently of the CDK machinery. Orlando et al. used microarrays to measure the expression of a set of 1,271 genes that they identified as periodic in both wild type cells and cells lacking all S-phase and mitotic cyclins (clb1,2,3,4,5,6). Of the 1,271 genes assayed, 882 continued to be expressed in the cyclin-deficient cells at the same time as in the wild type cells, despite the fact that the cyclin-deficient cells arrest at the border between G1 and S phase. However, 833 of the genes assayed changed behavior between the wild type and mutant cells, indicating that these genes are likely directly or indirectly regulated by the CDK-cyclin machinery. Some genes that continued to be expressed on time in the mutant cells were also expressed at different levels in the mutant and wild type cells. These findings suggest that while the transcriptional network may oscillate independently of the CDK-cyclin oscillator, they are coupled in a manner that requires both to ensure the proper timing of cell cycle events.[20] Other work indicates that phosphorylation, a post-translational modification, of cell cycle transcription factors by Cdk1 may alter the localization or activity of the transcription factors in order to tightly control timing of target genes.[22][25][26]

text: While oscillatory transcription plays a key role in the progression of the yeast cell cycle, the CDK-cyclin machinery operates independently in the early embryonic cell cycle. Before the midblastula transition, zygotic transcription does not occur and all needed proteins, such as the B-type cyclins, are translated from maternally loaded mRNA.[27]

text: DNA replication and DNA replication origin activity[edit]

text: Analyses of synchronized cultures of Saccharomyces cerevisiae under conditions that prevent DNA replication initiation without delaying cell cycle progression showed that origin licensing decreases the expression of genes with origins near their 3' ends, revealing that downstream origins can regulate the expression of upstream genes.[28] This confirms previous predictions from mathematical modeling of a global causal coordination between DNA replication origin activity and mRNA expression,[29][30][31] and shows that mathematical modeling of DNA microarray data can be used to correctly predict previously unknown biological modes of regulation.

text: Checkpoints[edit]

text: Cell cycle checkpoints are used by the cell to monitor and regulate the progress of the cell cycle.[32] Checkpoints prevent cell cycle progression at specific points, allowing verification of necessary phase processes and repair of DNA damage. The cell cannot proceed to the next phase until checkpoint requirements have been met. Checkpoints typically consist of a network of regulatory proteins that monitor and dictate the progression of the cell through the different stages of the cell cycle.

text: There are several checkpoints to ensure that damaged or incomplete DNA is not passed on to daughter cells. Three main checkpoints exist: the G1/S checkpoint, the G2/M checkpoint and the metaphase (mitotic) checkpoint.

text: G1/S transition is a rate-limiting step in the cell cycle and is also known as restriction point.[14] This is where the cell checks whether it has enough raw materials to fully replicate its DNA (nucleotide bases, DNA synthase, chromatin, etc.). An unhealthy or malnourished cell will get stuck at this checkpoint.

text: The G2/M checkpoint is where the cell ensures that it has enough cytoplasm and phospholipids for two daughter cells. But sometimes more importantly, it checks to see if it is the right time to replicate. There are some situations where many cells need to all replicate simultaneously (for example, a growing embryo should have a symmetric cell distribution until it reaches the mid-blastula transition). This is done by controlling the G2/M checkpoint.

text: The metaphase checkpoint is a fairly minor checkpoint, in that once a cell is in metaphase, it has committed to undergoing mitosis. However that's not to say it isn't important. In this checkpoint, the cell checks to ensure that the spindle has formed and that all of the chromosomes are aligned at the spindle equator before anaphase begins.[33]

text: While these are the three "main" checkpoints, not all cells have to pass through each of these checkpoints in this order to replicate. Many types of cancer are caused by mutations that allow the cells to speed through the various checkpoints or even skip them altogether. Going from S to M to S phase almost consecutively. Because these cells have lost their checkpoints, any DNA mutations that may have occurred are disregarded and passed on to the daughter cells. This is one reason why cancer cells have a tendency to exponentially accrue mutations. Aside from cancer cells, many fully differentiated cell types no longer replicate so they leave the cell cycle and stay in G0 until their death. Thus removing the need for cellular checkpoints. An alternative model of the cell cycle response to DNA damage has also been proposed, known as the postreplication checkpoint.

text: Checkpoint regulation plays an important role in an organism's development. In sexual reproduction, when egg fertilization occurs, when the sperm binds to the egg, it releases signalling factors that notify the egg that it has been fertilized. Among other things, this induces the now fertilized oocyte to return from its previously dormant, G0, state back into the cell cycle and on to mitotic replication and division.

text: p53 plays an important role in triggering the control mechanisms at both G1/S and G2/M checkpoints. In addition to p53, checkpoint regulators are being heavily researched for their roles in cancer growth and proliferation.

text: Fluorescence imaging of the cell cycle[edit]

text: Pioneering work by Atsushi Miyawaki and coworkers developed the fluorescent ubiquitination-based cell cycle indicator (FUCCI), which enables fluorescence imaging of the cell cycle. Originally, a green fluorescent protein, mAG, was fused to hGem(1/110) and an orange fluorescent protein (mKO2) was fused to hCdt1(30/120). Note, these fusions are fragments that contain a nuclear localization signal and ubiquitination sites for degradation, but are not functional proteins. The green fluorescent protein is made during the S, G2, or M phase and degraded during the G0 or G1 phase, while the orange fluorescent protein is made during the G0 or G1 phase and destroyed during the S, G2, or M phase.[34] A far-red and near-infrared FUCCI was developed using a cyanobacteria-derived fluorescent protein (smURFP) and a bacteriophytochrome-derived fluorescent protein (movie found at this link).[35]

text: Role in tumor formation[edit]

text: A disregulation of the cell cycle components may lead to tumor formation.[36] As mentioned above, when some genes like the cell cycle inhibitors, RB, p53 etc. mutate, they may cause the cell to multiply uncontrollably, forming a tumor. Although the duration of cell cycle in tumor cells is equal to or longer than that of normal cell cycle, the proportion of cells that are in active cell division (versus quiescent cells in G0 phase) in tumors is much higher than that in normal tissue[citation needed]. Thus there is a net increase in cell number as the number of cells that die by apoptosis or senescence remains the same.

text: The cells which are actively undergoing cell cycle are targeted in cancer therapy as the DNA is relatively exposed during cell division and hence susceptible to damage by drugs or radiation. This fact is made use of in cancer treatment; by a process known as debulking, a significant mass of the tumor is removed which pushes a significant number of the remaining tumor cells from G0 to G1 phase (due to increased availability of nutrients, oxygen, growth factors etc.). Radiation or chemotherapy following the debulking procedure kills these cells which have newly entered the cell cycle.[14]

text: The fastest cycling mammalian cells in culture, crypt cells in the intestinal epithelium, have a cycle time as short as 9 to 10 hours. Stem cells in resting mouse skin may have a cycle time of more than 200 hours. Most of this difference is due to the varying length of G1, the most variable phase of the cycle. M and S do not vary much.

text: In general, cells are most radiosensitive in late M and G2 phases and most resistant in late S phase.

text: For cells with a longer cell cycle time and a significantly long G1 phase, there is a second peak of resistance late in G1.

text: The pattern of resistance and sensitivity correlates with the level of sulfhydryl compounds in the cell. Sulfhydryls are natural substances that protect cells from radiation damage and tend to be at their highest levels in S and at their lowest near mitosis.


document_title: Scottsdale Stadium

question_text: where do the san francisco giants have spring training

text: Scottsdale Stadium

text:
Scottsdale Stadium

Scottsdale Stadium during a SF Giants spring training game.

Location
7408 E. Osborn Road
Scottsdale, AZ 85251

Coordinates
33°29′18″N 111°55′16″W / 33.48833°N 111.92111°W / 33.48833; -111.92111Coordinates: 33°29′18″N 111°55′16″W / 33.48833°N 111.92111°W / 33.48833; -111.92111

Owner
City of Scottsdale

Capacity
12,000

Field size
Left Field Line: 360’
Right Field Line: 330’
Center Field: 430’
Outfield Fence Height 10’

Surface
Grass

Construction

Broke ground
April 1991

Opened
March 12, 1992

Architect
Populous

Tenants

San Francisco Giants (MLB) (spring training) (1992–present)
Scottsdale Scorpions (AFL) (1992–present)
Phoenix Firebirds (PCL) (1992–1997)
Valley Vipers (WBL) (2000)
Arizona League Giants (AZL) (2005–present)
Arizona Centennials (FPBL) (2012)
Arizona United SC (USL) (2015)[1]

text: Scottsdale Stadium is a baseball field located in Scottsdale, Arizona, United States. The stadium was built in 1992 and holds 12,000 people. It is the spring training home of the San Francisco Giants.

text: Scottsdale was the home of the Phoenix Firebirds of the Pacific Coast League from 1992 until 1997, when the team moved to Fresno, California, and became the Grizzlies, in order to make room for the National League's Arizona Diamondbacks, who began play in 1998 and the Arizona Centennials of the Freedom Pro Baseball League in 2012. Scottsdale also hosted the Valley Vipers of the independent Western Baseball League in 2000, the only season of that team's existence.[2] Arizona United SC of the United Soccer League played at Scottsdale in 2015.

text: The stadium underwent a $23.1 million renovation in 2006. In return, the San Francisco Giants agreed to play at the stadium for an additional 20 years, through 2025, with an option to extend the lease to 2035.

text: Funding for the project included:

text:
$13.3 million from the Arizona Sports and Tourism Authority (AZSTA)
$6.67 million from Maricopa County Stadium District (MCSD) funds forwarded to AZSTA by the MCSD
$3.1 million from the City of Scottsdale

text: Key renovations to Scottsdale Stadium included:

text:
Construction of one full practice field and one half practice field east of the stadium
Expansion of the Giants Stadium Clubhouse
Creation of new deck and terrace seating in the right field berm area
Construction of a walkway connecting the left field berm and the right field berm area

text: Key renovations to Indian School Park included:

text:
Renovation of four full practice fields and one half practice field
Expansion of the Giants Minor League Clubhouse
Reconstructed batting cages

text: The Giants hold their major league and minor league training operation at the two facilities. Scottsdale Stadium is consistently one of the top attended venues in Arizona's Cactus League. The Scottsdale Charros organize and promote San Francisco spring training in the city.

text: The stadium is also host of the Scottsdale Scorpions in the Arizona Fall League, and hosts the Fall League's championship game at the end of November. During the summer the stadium is home the Arizona League Giants of the Arizona League. The stadium is also available to rent and hosts numerous parties, events and meetings throughout the year.

text: The stadium was built on the site of the old Scottsdale Stadium, built in 1956, which also hosted the Giants as well as the Baltimore Orioles, Boston Red Sox, Chicago Cubs and Oakland A's. The ballpark was constructed in less than a year to avoid having the Giants play their spring games at another location.

text: In March 2006, the stadium hosted three games from Pool B of the World Baseball Classic.

text:
March 7, 2006

 Canada 11,  South Africa 8

March 8, 2006

 Mexico 10,  South Africa 4

March 10, 2006

 United States 17,  South Africa 0


document_title: Time in Oregon

question_text: where is the time zone line in oregon

question_tokens: where is the time zone line in oregon

text: Time in Oregon

text: Time in Oregon is divided into two zones. The vast majority of the state is contained in the Pacific Time Zone. Most of sparsely populated Malheur County, including its largest city, Ontario, and its county seat, Vale, are in the Mountain Time Zone due to their proximity to Boise, Idaho. The time zone division occurs at the southwest corner of township 35 S, range 37 E (approximately 42.45 degrees north latitude), continuing east to the state line, then south along the Oregon-Idaho border to the Nevada state line.[1]

text: Drewsey in Harney County is officially in the Pacific Time Zone, but some residents unofficially observe Mountain Time due to proximity to Malheur County. Local businesses and the Oregon Department of Transportation strictly enforce the practice of Pacific Time, however.

text: IANA time zone database[edit]

text: In the IANA time zone database, Oregon is contained in two zones:

text:
c.c.*
coordinates*
TZ*
comments*
UTC offset
UTC offset DST
Note

US
+340308-1181434
America/Los_Angeles
Pacific Time
−08:00
UTC−07
All except northern 3/4 of Malheur County

US
+433649-1161209
America/Boise
Mountain Time - south Idaho & east Oregon
−07:00
UTC−06
Northern 3/4 of Malheur County only


document_title: Electron shell

question_text: how many outer ring electrons does oxygen have

text: Electron shell

text: History

text: The shell terminology comes from Arnold Sommerfeld's modification of the Bohr model. Sommerfeld retained Bohr's planetary model, but added mildly elliptical orbits (characterized by additional quantum numbers ℓ and m) to explain the fine spectroscopic structure of some elements.[3] The multiple electrons with the same principal quantum number (n) had close orbits that formed a "shell" of positive thickness instead of the infinitely thin circular orbit of Bohr's model.

text: The existence of electron shells was first observed experimentally in Charles Barkla's and Henry Moseley's X-ray absorption studies. Barkla labeled them with the letters K, L, M, N, O, P, and Q.[4] The origin of this terminology was alphabetic. A "J" series was also suspected, though later experiments indicated that the K absorption lines are produced by the innermost electrons. These letters were later found to correspond to the n values 1, 2, 3, etc. They are used in the spectroscopic Siegbahn notation.

text: The physical chemist Gilbert Lewis was responsible for much of the early development of the theory of the participation of valence shell electrons in chemical bonding. Linus Pauling later generalized and extended the theory while applying insights from quantum mechanics.

text: Shells

text: The electron shells are labeled K, L, M, N, O, P, and Q; or 1, 2, 3, 4, 5, 6, and 7; going from innermost shell outwards. Electrons in outer shells have higher average energy and travel farther from the nucleus than those in inner shells. This makes them more important in determining how the atom reacts chemically and behaves as a conductor, because the pull of the atom's nucleus upon them is weaker and more easily broken. In this way, a given element's reactivity is highly dependent upon its electronic configuration.

text: Subshells

text: Each shell is composed of one or more subshells, which are themselves composed of atomic orbitals. For example, the first (K) shell has one subshell, called 1s; the second (L) shell has two subshells, called 2s and 2p; the third shell has 3s, 3p, and 3d; the fourth shell has 4s, 4p, 4d and 4f; the fifth shell has 5s, 5p, 5d, and 5f and can theoretically hold more but the 5f subshell, although partially occupied in actinides, is not filled in any element occurring naturally.[2] The various possible subshells are shown in the following table:

text:
Subshell label
ℓ
Max electrons
Shells containing it
Historical name

s
0
2
Every shell
 sharp

p
1
6
2nd shell and higher
 principal

d
2
10
3rd shell and higher
 diffuse

f
3
14
4th shell and higher
 fundamental

g
4
18
5th shell and higher (theoretically)
(next in alphabet after f, excluding j)[5]

text:
The first column is the "subshell label", a lowercase-letter label for the type of subshell. For example, the "4s subshell" is a subshell of the fourth (N) shell, with the type (s) described in the first row.
The second column is the azimuthal quantum number (ℓ) of the subshell. The precise definition involves quantum mechanics, but it is a number that characterizes the subshell.
The third column is the maximum number of electrons that can be put into a subshell of that type. For example, the top row says that each s-type subshell (1s, 2s, etc.) can have at most two electrons in it. In each case the figure is 4 greater than the one above it.
The fourth column says which shells have a subshell of that type. For example, looking at the top two rows, every shell has an s subshell, while only the second shell and higher have a p subshell (i.e., there is no "1p" subshell).
The final column gives the historical origin of the labels s, p, d, and f. They come from early studies of atomic spectral lines. The other labels, namely g, h and i, are an alphabetic continuation following the last historically originated label of f.

text: Although it is commonly stated that all the electrons in a shell have the same energy, this is an approximation. However, the electrons in one subshell do have exactly the same level of energy,[6] with later subshells having more energy per electron than earlier ones. This effect is great enough that the energy ranges associated with shells can overlap (see valence shells and Aufbau principle).

text: Number of electrons in each shell

text:
Shell
name
Subshell
name
Subshell
max
electrons
Shell
max
electrons

K
1s
2
2

L
2s
2
2 + 6 = 8

2p
6

M
3s
2
2 + 6 + 10
= 18

3p
6

3d
10

N
4s
2
2 + 6 +
10 + 14
= 32

4p
6

4d
10

4f
14

O
5s
2
2 + 6 +
10 + 14 +
18 = 50

5p
6

5d
10

5f
14

5g
18

text: Each subshell is constrained to hold 4ℓ + 2 electrons at most, namely:

text:
Each s subshell holds at most 2 electrons
Each p subshell holds at most 6 electrons
Each d subshell holds at most 10 electrons
Each f subshell holds at most 14 electrons
Each g subshell holds at most 18 electrons

text: Therefore, the K shell, which contains only an s subshell, can hold up to 2 electrons; the L shell, which contains an s and a p, can hold up to 2 + 6 = 8 electrons, and so forth; in general, the nth shell can hold up to 2n2 electrons.[1]

text: Although that formula gives the maximum in principle, in fact that maximum is only achieved (by known elements) for the first four shells (K, L, M, N). No known element has more than 32 electrons in any one shell.[7][8] This is because the subshells are filled according to the Aufbau principle. The first elements to have more than 32 electrons in one shell would belong to the g-block of period 8 of the periodic table. These elements would have some electrons in their 5g subshell and thus have more than 32 electrons in the O shell (fifth principal shell).

text: Valence shell

text: The valence shell is the outermost shell of an atom. Valence electrons in non-transition metal elements reside in this shell. Such elements with complete valence shells (noble gases) are the most chemically non-reactive, while those with only one electron in their valence shells (alkali metals) or just missing one electron from having a complete shell (halogens) are the most reactive.[9]

text: However, this terminology is somewhat misleading in the case of transition metals. In these elements, a valence electron can also be in an inner shell. Thus, the electrons that determine how an atom reacts chemically are those that travel farthest from the nucleus, that is, those with the highest energy, and not necessarily in the valence shell.

text: List of elements with electrons per shell

text: The list below gives the elements arranged by increasing atomic number and shows the number of electrons per shell. At a glance, one can see that subsets of the list show obvious patterns. In particular, the seven elements (in   electric blue) before a noble gas (group 18, in   yellow) higher than helium have the number of electrons in the valence shell in arithmetic progression. (However, this pattern may break down in the seventh period due to relativistic effects.)

text: Sorting the table by chemical group shows additional patterns, especially with respect to the last two outermost shells. (Elements 57 to 71 belong to the lanthanides, while 89 to 103 are the actinides.)

text: The list below is primarily consistent with the Aufbau principle. However, there are a number of exceptions to the rule; for example palladium (atomic number 46) has no electrons in the fifth shell, unlike other atoms with lower atomic number. Some entries in the table are uncertain, when experimental data is unavailable. (For example, the elements past 108 have such short half-lives that their electron configurations have not yet been measured.)

text:
Z
Element
No. of electrons/shell
Group

1
Hydrogen
1
1

2
Helium
2
18

3
Lithium
2, 1
1

4
Beryllium
2, 2
2

5
Boron
2, 3
13

6
Carbon
2, 4
14

7
Nitrogen
2, 5
15

8
Oxygen
2, 6
16

9
Fluorine
2, 7
17

10
Neon
2, 8
18

11
Sodium
2, 8, 1
1

12
Magnesium
2, 8, 2
2

13
Aluminium
2, 8, 3
13

14
Silicon
2, 8, 4
14

15
Phosphorus
2, 8, 5
15

16
Sulfur
2, 8, 6
16

17
Chlorine
2, 8, 7
17

18
Argon
2, 8, 8
18

19
Potassium
2, 8, 8, 1
1

20
Calcium
2, 8, 8, 2
2

21
Scandium
2, 8, 9, 2
3

22
Titanium
2, 8, 10, 2
4

23
Vanadium
2, 8, 11, 2
5

24
Chromium
2, 8, 13, 1
6

25
Manganese
2, 8, 13, 2
7

26
Iron
2, 8, 14, 2
8

27
Cobalt
2, 8, 15, 2
9

28
Nickel
2, 8, 16, 2
10

29
Copper
2, 8, 18, 1
11

30
Zinc
2, 8, 18, 2
12

31
Gallium
2, 8, 18, 3
13

32
Germanium
2, 8, 18, 4
14

33
Arsenic
2, 8, 18, 5
15

34
Selenium
2, 8, 18, 6
16

35
Bromine
2, 8, 18, 7
17

36
Krypton
2, 8, 18, 8
18

37
Rubidium
2, 8, 18, 8, 1
1

38
Strontium
2, 8, 18, 8, 2
2

39
Yttrium
2, 8, 18, 9, 2
3

40
Zirconium
2, 8, 18, 10, 2
4

41
Niobium
2, 8, 18, 12, 1
5

42
Molybdenum
2, 8, 18, 13, 1
6

43
Technetium
2, 8, 18, 13, 2
7

44
Ruthenium
2, 8, 18, 15, 1
8

45
Rhodium
2, 8, 18, 16, 1
9

46
Palladium
2, 8, 18, 18
10

47
Silver
2, 8, 18, 18, 1
11

48
Cadmium
2, 8, 18, 18, 2
12

49
Indium
2, 8, 18, 18, 3
13

50
Tin
2, 8, 18, 18, 4
14

51
Antimony
2, 8, 18, 18, 5
15

52
Tellurium
2, 8, 18, 18, 6
16

53
Iodine
2, 8, 18, 18, 7
17

54
Xenon
2, 8, 18, 18, 8
18

55
Caesium
2, 8, 18, 18, 8, 1
1

56
Barium
2, 8, 18, 18, 8, 2
2

57
Lanthanum
2, 8, 18, 18, 9, 2
3

58
Cerium
2, 8, 18, 19, 9, 2

59
Praseodymium
2, 8, 18, 21, 8, 2

60
Neodymium
2, 8, 18, 22, 8, 2

61
Promethium
2, 8, 18, 23, 8, 2

62
Samarium
2, 8, 18, 24, 8, 2

63
Europium
2, 8, 18, 25, 8, 2

64
Gadolinium
2, 8, 18, 25, 9, 2

65
Terbium
2, 8, 18, 27, 8, 2

66
Dysprosium
2, 8, 18, 28, 8, 2

67
Holmium
2, 8, 18, 29, 8, 2

68
Erbium
2, 8, 18, 30, 8, 2

69
Thulium
2, 8, 18, 31, 8, 2

70
Ytterbium
2, 8, 18, 32, 8, 2

71
Lutetium
2, 8, 18, 32, 9, 2

72
Hafnium
2, 8, 18, 32, 10, 2
4

73
Tantalum
2, 8, 18, 32, 11, 2
5

74
Tungsten
2, 8, 18, 32, 12, 2
6

75
Rhenium
2, 8, 18, 32, 13, 2
7

76
Osmium
2, 8, 18, 32, 14, 2
8

77
Iridium
2, 8, 18, 32, 15, 2
9

78
Platinum
2, 8, 18, 32, 17, 1
10

79
Gold
2, 8, 18, 32, 18, 1
11

80
Mercury
2, 8, 18, 32, 18, 2
12

81
Thallium
2, 8, 18, 32, 18, 3
13

82
Lead
2, 8, 18, 32, 18, 4
14

83
Bismuth
2, 8, 18, 32, 18, 5
15

84
Polonium
2, 8, 18, 32, 18, 6
16

85
Astatine
2, 8, 18, 32, 18, 7
17

86
Radon
2, 8, 18, 32, 18, 8
18

87
Francium
2, 8, 18, 32, 18, 8, 1
1

88
Radium
2, 8, 18, 32, 18, 8, 2
2

89
Actinium
2, 8, 18, 32, 18, 9, 2
3

90
Thorium
2, 8, 18, 32, 18, 10, 2

91
Protactinium
2, 8, 18, 32, 20, 9, 2

92
Uranium
2, 8, 18, 32, 21, 9, 2

93
Neptunium
2, 8, 18, 32, 22, 9, 2

94
Plutonium
2, 8, 18, 32, 24, 8, 2

95
Americium
2, 8, 18, 32, 25, 8, 2

96
Curium
2, 8, 18, 32, 25, 9, 2

97
Berkelium
2, 8, 18, 32, 27, 8, 2

98
Californium
2, 8, 18, 32, 28, 8, 2

99
Einsteinium
2, 8, 18, 32, 29, 8, 2

100
Fermium
2, 8, 18, 32, 30, 8, 2

101
Mendelevium
2, 8, 18, 32, 31, 8, 2

102
Nobelium
2, 8, 18, 32, 32, 8, 2

103
Lawrencium
2, 8, 18, 32, 32, 8, 3

104
Rutherfordium
2, 8, 18, 32, 32, 10, 2
4

105
Dubnium
2, 8, 18, 32, 32, 11, 2
5

106
Seaborgium
2, 8, 18, 32, 32, 12, 2
6

107
Bohrium
2, 8, 18, 32, 32, 13, 2
7

108
Hassium
2, 8, 18, 32, 32, 14, 2
8

109
Meitnerium
2, 8, 18, 32, 32, 15, 2 (?)
9

110
Darmstadtium
2, 8, 18, 32, 32, 16, 2 (?)
10

111
Roentgenium
2, 8, 18, 32, 32, 17, 2 (?)
11

112
Copernicium
2, 8, 18, 32, 32, 18, 2 (?)
12

113
Nihonium
2, 8, 18, 32, 32, 18, 3 (?)
13

114
Flerovium
2, 8, 18, 32, 32, 18, 4 (?)
14

115
Moscovium
2, 8, 18, 32, 32, 18, 5 (?)
15

116
Livermorium
2, 8, 18, 32, 32, 18, 6 (?)
16

117
Tennessine
2, 8, 18, 32, 32, 18, 7 (?)
17

118
Oganesson
2, 8, 18, 32, 32, 18, 8 (?)
18