A total eclipse of the Moon occurs on Wednesday 26 May, 2021 UT, lasting from 08:47–13:49 UT. The Moon will barely edge into total eclipse for just 14 minutes and 30 seconds. With the Moon just barely inside the Earth's umbral shadow, the Moon may be quite bright, but even so, this should be worth seeing for observers from the western Americas, the Pacific, Australia, and south-east Asia. The partial eclipse will last for 3 hours and 7 minutes in total.

The timings of the phases of the eclipse are as follows. You will be able to see each phase of the eclipse if the Moon is up at the corresponding time as seen from your location; however the penumbral phase will be very difficult to see in practice, so you may want to start watching at the partial phase:

Penumbral eclipse begins: 08:47:39 UT
Partial eclipse begins: 09:44:57 UT
Total eclipse begins: 11:11:25 UT
Maximum eclipse: 11:18:40 UT
Total eclipse ends: 11:25:55 UT
Partial eclipse ends: 12:52:22 UT
Penumbral eclipse ends: 13:49:41 UT

During this eclipse the Moon will be at perigee, making it extremely large. At maximum eclipse it will be 0.567° in apparent diameter, which is 6.7% larger than average. The statistics page has information on the ranges of the sizes of the Sun and Moon.

Interactive Map

This map shows the visibility of the eclipse at various stages. The bright area in the middle will see the whole eclipse; the coloured bands to the right will see the start of the eclipse, and those on the left will see the end. Note that the map is approximate, and if you are near the edge of the area of visibility, the moon will be very close to the horizon and may not be practically visible.

You can use the zoom controls to zoom in and out, and pan to see areas of interest. Hover your mouse over the tags to see what will be visible from each area on the map. The green marker in the centre shows where the Moon will be directly overhead at maximum eclipse.

Overview Map

This map sourced from NASA's Eclipse Web Site shows the visibility of the eclipse. (Click on it for the full-sized version.)

Eclipse Season and Saros Series

This eclipse season contains 2 eclipses:

This is the 55th eclipse in lunar Saros series 121.The surrounding eclipses in this Saros series are:

Eclipse Parameters

UT Date/time (max) 11:18:41 on 26 May UT TDT Date/time (max) 11:19:53 on 26 May TDT
Saros Series 121 Number in Series 54
Penumbral Magnitiude 1.954 Central Magnitiude 1.0095
Gamma 0.4774 Path Width (km)
Delta T 1m12s Error ± 0m06s (95%)
Penumbral Duration 5h02m Partial Duration 3h07m
Total Duration 14m30s
Partial Rating Total Rating
Sun Distance 151552916 km (92.2%) Moon Distance 357464 km (2.1%)
Sun Diameter 0.526° Moon Diameter 0.557° - 0.567°
Perigee 01:52 on 26 May UT Apogee 02:28 on 8 Jun UT
Contact p1 08:47:39 on 26 May UT Contact p2
Contact u1 09:44:57 on 26 May UT Contact u2 11:11:25 on 26 May UT
Max eclipse 11:18:40 on 26 May UT
Contact u3 11:25:55 on 26 May UT Contact u4 12:52:22 on 26 May UT
Contact p3 Contact p4 13:49:41 on 26 May UT

Note that while all dates and times on this site (except where noted) are in UT, which is within a second of civil time, the dates and times shown in NASA's eclipse listings are in the TDT timescale.

The Sun and Moon distances are shown in km, and as a percentage of their minimum - maximum distances; hence 0% is the closest possible (Earth's perihelion, or the Moon's closest possible perigee) and 100% is the farthest (aphelion, the farthest apogee). The statistics page has information on the ranges of sizes of the Sun and Moon.

Data last updated: 2015-06-21 22:11:46 UTC.