A penumbral eclipse of the Moon occurred on 17 January, 1638 BC UT Old Style, with maximum eclipse at 22:50 UT. This subtle penumbral eclipse may have been visible to a skilled observer at maximum eclipse. 60% of the Moon's disc was partially shaded by the Earth (none of it was in total shadow), which caused a gentle shadow gradient across its disc at maximum; the eclipse as a whole lasted 3 hours and 25 minutes.

The penumbral eclipse lasted for 3 hours and 25 minutes. Maximum eclipse was at 22:50:02 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)
https://eclipse.gsfc.nasa.gov/eclipse.html
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 17th eclipse in lunar Saros series 27.The surrounding eclipses in this Saros series are:

This Saros series, lunar Saros series 27, is linked to solar Saros series 34. The nearest partner eclipses in that series are:

Eclipse Parameters

UT Date/time (max) 22:50:02 on 17 Jan UT TDT Date/time (max) 09:24:17 on 18 Jan TDT
Saros Series 27 Number in Series 17
Penumbral Magnitiude 0.6049 Central Magnitiude -0.3901
Gamma -1.2265 Path Width (km)
Delta T 10h34m Error ± 1h17m (95%)
Penumbral Duration 3h25m 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)
https://eclipse.gsfc.nasa.gov/eclipse.html
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.