Solar eclipse of July 20, 1944

This eclipse is a member of a semester series. An eclipse in a semester series of solar eclipses repeats approximately every 177 days and 4 hours (a semester) at alternating nodes of the Moon's orbit.[1]

Note: The partial solar eclipse on September 10, 1942 occurs in the previous lunar year eclipse set.

Solar eclipse series sets from 1942–1946
Ascending node			Descending node
115	August 12, 1942 Partial		120	February 4, 1943 Total
125	August 1, 1943 Annular		130	January 25, 1944 Total
135	July 20, 1944 Annular		140	January 14, 1945 Annular
145	July 9, 1945 Total		150	January 3, 1946 Partial
155	June 29, 1946 Partial

It is a part of Saros cycle 135, repeating every 18 years, 11 days, containing 71 events. The series started with partial solar eclipse on July 5, 1331. It contains annular eclipses from October 21, 1511 through February 24, 2305, hybrid eclipses on March 8, 2323 and March 18, 2341 and total eclipses from March 29, 2359 through May 22, 2449. The series ends at member 71 as a partial eclipse on August 17, 2593. The longest duration of totality will be 2 minutes, 27 seconds on May 12, 2431.

Series members 27–43 occur between 1800 and 2100:
27	28	29
Apr 24, 1800	May 5, 1818	May 15, 1836
30	31	32
May 26, 1854	Jun 6, 1872	Jun 17, 1890
33	34	35
Jun 28, 1908	Jul 9, 1926	Jul 20, 1944
36	37	38
Jul 31, 1962	Aug 10, 1980	Aug 22, 1998
39	40	41
Sep 1, 2016	Sep 12, 2034	Sep 22, 2052
42	43
Oct 4, 2070	Oct 14, 2088

The metonic series repeats eclipses every 19 years (6939.69 days), lasting about 5 cycles. Eclipses occur in nearly the same calendar date. In addition, the octon subseries repeats 1/5 of that or every 3.8 years (1387.94 days).

21 eclipse events between July 21, 1906 and July 20, 1982
July 20–21	May 9	February 24–25	December 13–14	October 1–2
105	107	109	111	113
			December 13, 1898
115	117	119	121	123
July 21, 1906	May 9, 1910	February 25, 1914	December 14, 1917	October 1, 1921
125	127	129	131	133
July 20, 1925	May 9, 1929	February 24, 1933	December 13, 1936	October 1, 1940
135	137	139	141	143
July 20, 1944	May 9, 1948	February 25, 1952	December 14, 1955	October 2, 1959
145	147	149	151	153
July 20, 1963	May 9, 1967	February 25, 1971	December 13, 1974	October 2, 1978
155
July 20, 1982