
A penumbral lunar eclipse took place on Monday, April 22, 1940. This was a deep penumbral eclipse, with the moon southern limb passing close to the northern umbral shadow.
Visibility

Related lunar eclipses
| Ascending node | Descending node | |||||
|---|---|---|---|---|---|---|
| Saros | Date Viewing | Type Chart | Saros | Date Viewing | Type Chart | |
| 110 | 1937 May 25  | Penumbral  | 115 | 1937 Nov 18  | Partial  | |
| 120 | 1938 May 14  | Total  | 125 | 1938 Nov 07  | Total  | |
| 130 | 1939 May 03  | Total  | 135 | 1939 Oct 28  | Partial  | |
| 140 | 1940 Apr 22  | Penumbral  | 145 | 1940 Oct 16  | Penumbral  | |
Saros series
It was part of Saros series 140.
Half-Saros cycle
A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros).[1] This lunar eclipse is related to two partial solar eclipses of Solar Saros 147.
| April 18, 1931 | April 28, 1949 | 
|---|---|
|  |  | 
Tritos series
- Preceded: Lunar eclipse of May 23, 1929
- Followed: Lunar eclipse of March 23, 1951
Tzolkinex
- Preceded: Lunar eclipse of August 4, 1933
- Followed: Lunar eclipse of June 3, 1947
See also
Notes
- ↑ Mathematical Astronomy Morsels, Jean Meeus, p.110, Chapter 18, The half-saros
External links
- 1940 Apr 22 chart Eclipse Predictions by Fred Espenak, NASA/GSFC
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