A penumbral eclipse of the Moon occurred on 21 May, 1663 BC UT Old Style, with maximum eclipse at 20:54 UT. In this extremely marginal eclipse, the Moon barely clipped the edge of the Earth's penumbral shadow. This caused a microscopic darkening of just 3% of the Moon's disc for 53 minutes and 18 seconds, which was essentially impossible to see.
The penumbral eclipse lasted for 53 minutes and 18 seconds.
Maximum eclipse was at 20:54:32 UT.
Overview Map
This map sourced from NASA Goddard Space flight Center: GSFC Eclipse Web SiteGSFC Eclipse Web Site
The primary source of all the information on eclipses presented here at Hermit Eclipse. (NASA Goddard Space flight Center)
shows the visibility of the eclipse. (Click on it for the
full-sized version.)
Eclipse Season and Saros Series
This eclipse season contains 3 eclipses:
This was the 1st eclipse in lunar Saros series 33.The surrounding eclipses in this Saros series are:
This Saros series, lunar Saros series 33,
is linked to solar Saros series 40. The
nearest partner eclipses in that series are:
Eclipse Parameters
| UT Date/time (max) | 20:54:32 on 21 May UT |
TDT Date/time (max) | 07:37:52 on 22 May TDT |
| Saros Series | 33 |
Number in Series | 1 |
| Penumbral Magnitiude | 0.0332 |
Central Magnitiude | -0.9848 |
| Gamma | -1.5444 |
Path Width (km) | |
| Delta T | 10h43m |
Error | ± 1h20m (95%) |
| Penumbral Duration | 53m18s |
Partial Duration | |
| Total Duration | |
| |
| Partial Rating | |
Total Rating | |
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 listingsGSFC Eclipse Web Site
The primary source of all the information on eclipses presented here at Hermit Eclipse. (NASA Goddard Space flight Center)
are in the TDT timescale.
For this eclipse, this makes the date shown on this site
different to NASA's date.
Data last updated: 2015-06-21 22:11:39 UTC.
