An annular solar eclipse will occur at the Moon's descending node of orbit on Wednesday, May 21, 2031, with a magnitude of 0.9589. A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby totally or partly obscuring the image of the Sun for a viewer on Earth. An annular solar eclipse occurs when the Moon's apparent diameter is smaller than the Sun's, blocking most of the Sun's light and causing the Sun to look like an annulus (ring). An annular eclipse appears as a partial eclipse over a region of the Earth thousands of kilometres wide. Occurring about 3.8 days before apogee (on May 25, 2031, at 3:10 UTC), the Moon's apparent diameter will be smaller.

Annularity will be visible from parts of Angola, Zambia, the southern Democratic Republic of the Congo, northern Malawi, Tanzania, southern India, northern Sri Lanka, the Andaman and Nicobar Islands, southern Thailand, Malaysia, and much of Indonesia. A partial eclipse will be visible for much of Africa, the Middle East, South Asia, Southeast Asia, and Australia.

Images Animated path

Eclipse timing Places experiencing annular eclipse Solar Eclipse of May 21, 2031(Local Times)Country or territory City or placeStart of partial eclipseStart of annular eclipseMaximum eclipseEnd of annular eclipseEnd of partial eclipseDuration of annularity (min:s)Duration of eclipse (hr:min)Maximum coverage Lubumbashi 06:20:25 (sunrise) 07:21:59 07:23:56 07:25:53 08:46:19 3:54 2:26 90.03% Kasama 06:14:31 07:24:26 07:26:27 07:28:29 08:52:48 4:03 2:38 90.24% Mbeya 07:14:56 08:26:35 08:28:36 08:30:36 09:57:40 4:01 2:43 90.39% Dar es Salaam 07:16:42 08:33:46 08:35:13 08:36:40 10:11:54 2:54 2:55 90.73% Zanzibar City 07:16:57 08:33:23 08:35:30 08:37:37 10:12:15 4:14 2:55 90.74% Kochi 10:57:36 13:01:00 13:03:23 13:05:46 15:02:30 4:46 4:05 92.05% Alappuzha 10:57:19 13:00:50 13:03:28 13:06:05 15:02:46 5:15 4:05 92.05% Chalakudy 10:58:16 13:03:02 13:03:53 13:04:45 15:02:38 1:43 4:04 92.05% Kottayam 10:58:02 13:01:34 13:04:14 13:06:55 15:03:14 5:21 4:05 92.04% Thiruvalla 10:57:59 13:01:54 13:04:20 13:06:48 15:03:24 4:54 4:05 92.04% Pathanamthitta 10:58:32 13:02:59 13:05:06 13:07:15 15:03:57 4:16 4:05 92.03% Painavu 10:59:40 13:03:21 13:05:58 13:08:36 15:04:15 5:15 4:05 92.04% Gudalur 11:00:29 13:04:24 13:07:05 13:09:46 15:05:03 5:22 4:05 92.03% Theni 11:01:36 13:05:39 13:08:08 13:10:36 15:05:33 4:57 4:04 92.02% Madurai 11:03:37 13:07:53 13:10:30 13:13:07 15:07:06 5:14 4:03 92.01% Ilaiyangudi 11:05:03 13:09:45 13:12:21 13:14:56 15:08:22 5:11 4:03 91.99% Karaikudi 11:06:00 13:10:34 13:13:02 13:15:31 15:08:37 4:57 4:03 91.99% Vedaranyam 11:10:02 13:15:28 13:17:07 13:18:48 15:10:56 3:20 4:01 91.96% Jaffna 11:09:55 13:14:58 13:17:33 13:20:08 15:11:30 5:10 4:02 91.95% Kangar 14:56:18 16:42:13 16:44:23 16:46:35 18:09:56 4:22 3:14 90.95% Alor Setar 14:56:54 16:42:31 16:44:49 16:47:06 18:10:09 4:35 3:13 90.94% George Town 14:56:54 16:44:03 16:44:59 16:45:57 18:10:22 1:54 3:13 90.93% Kota Bharu 15:03:09 16:46:23 16:47:59 16:49:37 18:11:15 3:14 3:08 90.83% Kuala Terengganu 15:06:04 16:47:25 16:49:39 16:51:53 18:11:59 4:28 3:06 90.77% Sarikei 15:29:12 16:58:41 17:00:46 17:02:50 18:15:15 4:09 2:46 90.25% Sibu 15:29:51 16:58:54 17:00:59 17:03:06 18:15:14 4:12 2:45 90.24% Samarinda 15:40:44 17:04:08 17:05:25 17:06:44 18:10:50 (sunset) 2:36 2:30 89.90% Palu 15:45:07 17:04:52 17:06:53 17:08:53 17:59:21 (sunset) 4:01 2:14 89.75% Ambon 16:55:01 18:07:17 18:09:11 18:11:04 18:21:58 (sunset) 3:47 1:27 89.29%References:

Places experiencing partial eclipse Solar Eclipse of May 21, 2031(Local Times)Country or territory City or placeStart of partial eclipseMaximum eclipseEnd of partial eclipseDuration of eclipse (hr:min)Maximum coverage Menongue 06:04:10 (sunrise) 06:20:46 07:34:37 1:30 89.03% Huambo 06:09:07 (sunrise) 06:20:46 07:32:57 1:24 80.87% Luena 05:50:52 (sunrise) 06:21:25 07:36:53 1:46 83.07% Luanda 06:13:10 (sunrise) 06:21:28 07:30.16 1:17 64.42% Windhoek 07:19:30 (sunrise) 07:21:58 08:33:16 1:14 72.46% Lusaka 06:23:01 (sunrise) 07:23:45 08:45:44 2:23 81.36% Harare 06:15:45 (sunrise) 07:25:11 08:47:54 2:32 69.41% Lilongwe 06:14:35 07:27:20 08:54:43 2:40 77.91% Gitega 06:18:24 07:28:51 08:53:10 2:35 70.40% Kigali 06:19:45 07:29:54 08:53:47 2:34 65.82% Dodoma 07:16:16 08:31:55 10:04:09 2:48 88.51% Nairobi 07:19:59 08:36:19 10:09:38 2:50 74.72% Moroni 07:18:00 08:37:46 10:16:03 2:58 70.16% Mogadishu 07:25:47 08:50:58 10:37:14 3:11 78.87% Victoria 08:30:16 10:05:18 12:04:20 3:34 72.04% Malé 10:13:55 12:18:22 14:23:15 4:09 77.42% Mumbai 11:03:33 12:55:57 14:47:03 3:44 60.09% Bengaluru 11:05:36 13:09:31 15:04:31 3:59 83.75% Sri Jayawardenepura Kotte 11:07:26 13:16:25 15:11:30 4:04 84.78% Yangon 13:16:00 15:01:23 16:27:47 3:12 61.64% Bangkok 13:58:37 15:41:17 17:04:24 3:06 68.19% Kuala Lumpur 15:02:07 16:48:00 18:11:41 3:10 85.80% Phnom Penh 14:11:43 15:49:19 17:08:25 2:57 70.76% Singapore 15:09:36 16:51:48 18:12:57 3:03 81.80% Ho Chi Minh City 14:16:39 15:52:05 17:09:37 2:53 71.40% Darwin 17:27:24 18:25:55 18:28:13 (sunset) 1:01 61.23% Jakarta 14:22:29 15:56:07 17:11:40 2:49 60.10% Pontianak 14:24:52 15:59:00 17:15:01 2:50 83.76% Bandar Seri Begawan 15:36:05 17:02:43 18:14:15 2:38 81.23% Dili 16:53:05 18:08:20 18:25:10 (sunset) 1:32 75.03%References:

Eclipse details Shown below are two tables displaying details about this particular solar eclipse. The first table outlines times at which the Moon's penumbra or umbra attains the specific parameter, and the second table describes various other parameters pertaining to this eclipse.

+May 21, 2031 Solar Eclipse Times Event Time (UTC) First Penumbral External Contact 2031 May 21 at 04:15:23.0 UTC First Umbral External Contact 2031 May 21 at 05:19:52.6 UTC First Central Line 2031 May 21 at 05:21:47.0 UTC First Umbral Internal Contact 2031 May 21 at 05:23:41.5 UTC First Penumbral Internal Contact 2031 May 21 at 06:30:37.3 UTC Equatorial Conjunction 2031 May 21 at 07:13:28.3 UTC Greatest Eclipse 2031 May 21 at 07:16:04.3 UTC Ecliptic Conjunction 2031 May 21 at 07:18:22.9 UTC Greatest Duration 2031 May 21 at 07:24:28.7 UTC Last Penumbral Internal Contact 2031 May 21 at 08:01:34.7 UTC Last Umbral Internal Contact 2031 May 21 at 09:08:27.6 UTC Last Central Line 2031 May 21 at 09:10:24.0 UTC Last Umbral External Contact 2031 May 21 at 09:12:20.5 UTC Last Penumbral External Contact 2031 May 21 at 10:16:51.4 UTC

+May 21, 2031 Solar Eclipse Parameters Parameter Value Eclipse Magnitude 0.95892 Eclipse Obscuration 0.91954 Gamma −0.19699 Sun Right Ascension 03h51m34.6s Sun Declination +20°09'39.2" Sun Semi-Diameter 15'48.2" Sun Equatorial Horizontal Parallax 08.7" Moon Right Ascension 03h51m39.8s Moon Declination +19°58'57.5" Moon Semi-Diameter 14'55.8" Moon Equatorial Horizontal Parallax 0°54'47.5" ΔT 74.4 s

Stars and Planets during the Eclipse Even those stars and planets bright enough to be visible during a total solar eclipse are in most cases not visible during an annular eclipse. The best candidate for naked-eye sighting is Venus, although it will be many degrees east of the Sun and therefore below the eastern horizon for morning observers in Africa. In southern India it will be well up in the east but at a lower altitude than the Sun. Venus will be best seen in those areas such as Malaysia and Indonesia where the eclipse peaks near sunset; it will be high in the west.

If any star is spotted during the eclipse it will be Sirius, which will be high in the east-southeast for observers in India and high in the west-southwest for observers in the East Indies.

Eclipse season

This eclipse is part of an eclipse season, a period, roughly every six months, when eclipses occur. Only two (or occasionally three) eclipse seasons occur each year, and each season lasts about 35 days and repeats just short of six months (173 days) later; thus two full eclipse seasons always occur each year. Either two or three eclipses happen each eclipse season. In the sequence below, each eclipse is separated by a fortnight. The first and last eclipse in this sequence is separated by one synodic month.

+ Eclipse season of May–June 2031 May 7Ascending node (full moon) May 21Descending node (new moon) June 5Ascending node (full moon) Penumbral lunar eclipseLunar Saros 112 Annular solar eclipseSolar Saros 138 Penumbral lunar eclipseLunar Saros 150

Related eclipses Eclipses in 2031 A penumbral lunar eclipse on May 7. An annular solar eclipse on May 21. A penumbral lunar eclipse on June 5. A penumbral lunar eclipse on October 30. A hybrid solar eclipse on November 14.

Metonic Preceded by: Solar eclipse of August 2, 2027 Followed by: Solar eclipse of March 9, 2035

Tzolkinex Preceded by: Solar eclipse of April 8, 2024 Followed by: Solar eclipse of July 2, 2038

Half-Saros Preceded by: Lunar eclipse of May 16, 2022 Followed by: Lunar eclipse of May 26, 2040

Tritos Preceded by: Solar eclipse of June 21, 2020 Followed by: Solar eclipse of April 20, 2042

Solar Saros 138 Preceded by: Solar eclipse of May 10, 2013 Followed by: Solar eclipse of May 31, 2049

Inex Preceded by: Solar eclipse of June 10, 2002 Followed by: Solar eclipse of April 30, 2060

Triad Preceded by: Solar eclipse of July 20, 1944 Followed by: Solar eclipse of March 22, 2118

Solar eclipses of 2029–2032

Saros 138

Metonic series

Tritos series

Inex series

References

External links NASA graphics