April 1921 lunar eclipse

A total lunar eclipse took place on Friday, April 22, 1921. This was the first total lunar eclipse of Saros cycle 130. A shallow total eclipse saw the Moon in relative darkness for 40 minutes and 6 seconds. The Moon was approximately 7% of its diameter into the Earth's umbral shadow, and should have been significantly darkened. The partial eclipse lasted for 3 hours and 22 minutes in total.

April 1921 lunar eclipse

Total eclipse
Date	April 22, 1921
Gamma	0.4269
Magnitude	1.0678
Saros cycle	130 (29 of 72)
Totality	40 minutes and 7 seconds
Partiality	202 minutes and 2 seconds
Penumbral	331 minutes and 54 seconds
Contacts (UTC) P1 04:58:21 U1 06:03:14 U2 07:24:12 Greatest 07:44:17 U3 08:04:19 U4 09:25:16 P4 10:30:16

Visibility

Related lunar eclipses

Saros series

Lunar saros series 130, repeating every 18 years and 11 days, has a total of 71 lunar eclipse events including 56 umbral lunar eclipses (42 partial lunar eclipses and 14 total lunar eclipses). Solar Saros 137 interleaves with this lunar saros with an event occurring every 9 years 5 days alternating between each saros series.

Greatest	First
The greatest eclipse of the series will occur on 2029 Jun 26, lasting 102 minutes.	Penumbral	Partial	Total	Central
	1416 Jun 10	1560 Sep 4	1921 Apr 22	1957 May 13
	Last
	Central	Total	Partial	Penumbral
	2083 Jul 29	2155 Sep 11	2552 May 10	2678 Jul 26

1901–2200

1903 Apr 12		1921 Apr 22		1939 May 3
1957 May 13		1975 May 25		1993 Jun 4
2011 Jun 15		2029 Jun 26		2047 Jul 7
2065 Jul 17		2083 Jul 29

Half-Saros cycle

A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros). This lunar eclipse is related to two annular solar eclipses of Solar Saros 137.

April 17, 1912	April 28, 1930

17 April 1912

!April 17, 1912 |

28 April 1930

!April 28, 1930 I

See also

• List of lunar eclipses
• List of 20th-century lunar eclipses

External links

• 1921 Apr 22 chart Eclipse Predictions by Fred Espenak, NASA/GSFC