A total eclipse of the Moon occurred on Saturday 4 May, 1985 UT, with maximum eclipse at 19:56 UT. The Moon was plunged into darkness for 1 hour and 8 minutes, in a deep total eclipse which saw the Moon 24% 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. The partial eclipse lasted for 3 hours and 19 minutes in total.

The penumbral eclipse lasted for 5 hours and 10 minutes. The partial eclipse lasted for 3 hours and 19 minutes. The total eclipse lasted for 1 hour and 8 minutes. Maximum eclipse was at 19:56:24 UT.

During this eclipse the Moon was at perigee, making it extremely large. At maximum eclipse it was 0.566° in apparent diameter, which is 6.6% 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 maximum eclipse, when it was visible within the bright area on the map. 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. 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 was the 53rd eclipse in lunar Saros series 121.The surrounding eclipses in this Saros series are:

Eclipse Parameters

UT Date/time (max) 19:56:24 on 4 May UT TDT Date/time (max) 19:57:19 on 4 May TDT
Saros Series 121 Number in Series 52
Penumbral Magnitiude 2.187 Central Magnitiude 1.2369
Gamma 0.3519 Path Width (km)
Delta T 0m55s Error ± 0m00s (95%)
Penumbral Duration 5h10m Partial Duration 3h19m
Total Duration 1h08m
Partial Rating Total Rating
Sun Distance 150876853 km (78.2%) Moon Distance 357979 km (3.1%)
Sun Diameter 0.529° Moon Diameter 0.556° - 0.566°
Perigee 05:23 on 4 May UT Apogee 23:49 on 16 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.