A total eclipse of the Moon occurred on Tuesday 21 December, 2010 UT, lasting from 05:29–11:04 UT. The Moon was plunged into darkness for 1 hour and 12 minutes, in a deep total eclipse which saw the Moon 26% of its diameter inside the Earth's umbral shadow. The visual effect of this depends on the state of the Earth's atmosphere, but the Moon may have been stained a deep red colour for observers over eastern Asia, Australasia, northwestern Europe and Africa, and the Americas. The partial eclipse lasted for 3 hours and 29 minutes in total.

The timings of the phases of the eclipse are as follows. You would have been able to see each phase of the eclipse if the Moon was up at the corresponding time as seen from your location; however the penumbral phase would have been very difficult to see in practice:

Penumbral eclipse began: 05:29:21 UT
Partial eclipse began: 06:32:38 UT
Total eclipse began: 07:40:48 UT
Maximum eclipse: 08:16:57 UT
Total eclipse ended: 08:53:09 UT
Partial eclipse ended: 10:01:19 UT
Penumbral eclipse ended: 11:04:28 UT

During this eclipse the Moon was just 4 days before perigee, making it relatively large. At maximum eclipse it was 0.538° in apparent diameter, which is 1.2% 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 saw the whole eclipse; the coloured bands to the right saw the start of the eclipse, and those on the left saw the end. Note that the map is approximate, and if you were near the edge of the area of visibility, the moon was very close to the horizon and may not have been 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 was visible from each area on the map. The green marker in the centre shows where the Moon was 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 was the 48th eclipse in lunar Saros series 125.The surrounding eclipses in this Saros series are:

Eclipse Parameters

UT Date/time (max) 08:16:57 on 21 Dec UT TDT Date/time (max) 08:18:04 on 21 Dec TDT
Saros Series 125 Number in Series 47
Penumbral Magnitiude 2.2807 Central Magnitiude 1.2561
Gamma 0.3214 Path Width (km)
Delta T 1m07s Error ± 0m01s (95%)
Penumbral Duration 5h35m Partial Duration 3h29m
Total Duration 1h12m
Partial Rating Total Rating
Sun Distance 147167143 km (1.5%) Moon Distance 376515 km (40.0%)
Sun Diameter 0.542° Moon Diameter 0.529° - 0.538°
Apogee 08:35 on 13 Dec UT Perigee 12:25 on 25 Dec UT
Contact p1 05:29:21 on 21 Dec UT Contact p2
Contact u1 06:32:38 on 21 Dec UT Contact u2 07:40:48 on 21 Dec UT
Max eclipse 08:16:57 on 21 Dec UT
Contact u3 08:53:09 on 21 Dec UT Contact u4 10:01:19 on 21 Dec UT
Contact p3 Contact p4 11:04:28 on 21 Dec 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.