An annular eclipse of the Sun occurred on 23 December, 1638 BC UT Old Style, with maximum eclipse at 19:37 UT. A small annular eclipse covered only 92% of the Sun in a very broad path, 401 km wide at maximum, and lasted 11 minutes and 58 seconds.
The annular eclipse lasted for 11 minutes and 58 seconds.
Maximum eclipse was at 19:37:31 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 annular solar eclipse. It also shows the broader area in which a partial eclipse was seen. (Click on it for the
full-sized version.)
Eclipse Season and Saros Series
This eclipse season contains 2 eclipses:
This eclipse belongs to solar Saros series 25.The surrounding eclipses in this Saros series are:
This Saros series, solar Saros series 25,
is linked to lunar Saros series 18. The
nearest partner eclipses in that series are:
Eclipse Parameters
| UT Date/time (max) | 19:37:31 on 23 Dec UT |
TDT Date/time (max) | 06:11:25 on 24 Dec TDT |
| Saros Series | 25 |
Number in Series | |
| Penumbral Magnitiude | |
Central Magnitiude | 0.9165 |
| Gamma | 0.6119 |
Path Width (km) | 401 |
| Delta T | 10h34m |
Error | ± 1h17m (95%) |
| Penumbral Duration | |
Partial Duration | |
| Total Duration | 11m58s |
| |
| 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.
