Solar eclipse of December 13, 1936

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]

Solar eclipse series sets from 1935–1938
Ascending node			Descending node
111	January 5, 1935 Partial		116	June 30, 1935 Partial
121	December 25, 1935 Annular		126	June 19, 1936 Total
131	December 13, 1936 Annular		136	June 8, 1937 Total
141	December 2, 1937 Annular		146	May 29, 1938 Total
151	November 21, 1938 Partial

It is a part of Saros cycle 131, repeating every 18 years, 11 days, containing 70 events. The series started with partial solar eclipse on August 1, 1125. It contains total eclipses from March 27, 1522 through May 30, 1612 and hybrid eclipses from June 10, 1630 through July 24, 1702, and annular eclipses from August 4, 1720 through June 18, 2243. The series ends at member 70 as a partial eclipse on September 2, 2369. The longest duration of totality was only 58 seconds on May 30, 1612. All eclipses in this series occurs at the Moon’s ascending node.

Series members 33–70 occur between 1702 and 2369
33	34	35
July 24, 1702	August 4, 1720	August 15, 1738
36	37	38
August 25, 1756	September 6, 1774	September 16, 1792
39	40	41
September 28, 1810	October 9, 1828	October 20, 1846
42	43	44
October 30, 1864	November 10, 1882	November 22, 1900
45	46	47
December 3, 1918	December 13, 1936	December 25, 1954
48	49	50
January 4, 1973	January 15, 1991	January 26, 2009
51	52	53
February 6, 2027	February 16, 2045	February 28, 2063
54	55	56
March 10, 2081	March 21, 2099	April 2, 2117
57	58	59
April 13, 2135	April 23, 2153	May 5, 2171
60	61	62
May 15, 2189	May 27, 2207	June 6, 2225
63	64	65
June 18, 2243	June 28, 2261	July 9, 2279
66	67	68
July 20, 2297	August 1, 2315	August 11, 2333
69	70
August 22, 2351	September 2, 2369

This eclipse is a part of the long period inex cycle, repeating at alternating nodes, every 358 synodic months (≈ 10,571.95 days, or 29 years minus 20 days). Their appearance and longitude are irregular due to a lack of synchronization with the anomalistic month (period of perigee). However, groupings of 3 inex cycles (≈ 87 years minus 2 months) comes close (≈ 1,151.02 anomalistic months), so eclipses are similar in these groupings.

Inex series members between 1901 and 2100:
January 3, 1908 (Saros 130)	December 13, 1936 (Saros 131)	November 23, 1965 (Saros 132)
November 3, 1994 (Saros 133)	October 14, 2023 (Saros 134)	September 22, 2052 (Saros 135)
September 3, 2081 (Saros 136)

This eclipse is a part of a tritos cycle, repeating at alternating nodes every 135 synodic months (≈ 3986.63 days, or 11 years minus 1 month). Their appearance and longitude are irregular due to a lack of synchronization with the anomalistic month (period of perigee), but groupings of 3 tritos cycles (≈ 33 years minus 3 months) come close (≈ 434.044 anomalistic months), so eclipses are similar in these groupings.

Series members between 1801 and 2100
December 21, 1805 (Saros 119)	November 19, 1816 (Saros 120)	October 20, 1827 (Saros 121)
September 18, 1838 (Saros 122)	August 18, 1849 (Saros 123)	July 18, 1860 (Saros 124)
June 18, 1871 (Saros 125)	May 17, 1882 (Saros 126)	April 16, 1893 (Saros 127)
March 17, 1904 (Saros 128)	February 14, 1915 (Saros 129)	January 14, 1926 (Saros 130)
December 13, 1936 (Saros 131)	November 12, 1947 (Saros 132)	October 12, 1958 (Saros 133)
September 11, 1969 (Saros 134)	August 10, 1980 (Saros 135)	July 11, 1991 (Saros 136)
June 10, 2002 (Saros 137)	May 10, 2013 (Saros 138)	April 8, 2024 (Saros 139)
March 9, 2035 (Saros 140)	February 5, 2046 (Saros 141)	January 5, 2057 (Saros 142)
December 6, 2067 (Saros 143)	November 4, 2078 (Saros 144)	October 4, 2089 (Saros 145)
September 4, 2100 (Saros 146)

In the 22nd century:

• Solar saros 147: annular solar eclipse of August 4, 2111
• Solar saros 148: total solar eclipse of July 4, 2122
• Solar saros 149: total solar eclipse of June 3, 2133
• Solar saros 150: annular solar eclipse of May 3, 2144
• Solar saros 151: annular solar eclipse of April 2, 2155
• Solar saros 152: total solar eclipse of March 2, 2166
• Solar saros 153: annular solar eclipse of January 29, 2177
• Solar saros 154: annular solar eclipse of December 29, 2187
• Solar saros 155: total solar eclipse of November 28, 2198

In the 23rd century:

• Solar saros 156: annular solar eclipse of October 29, 2209
• Solar saros 157: annular solar eclipse of September 27, 2220
• Solar saros 158: total solar eclipse of August 28, 2231
• Solar saros 159: partial solar eclipse of July 28, 2242
• Solar saros 160: partial solar eclipse of June 26, 2253
• Solar saros 161: partial solar eclipse of May 26, 2264
• Solar saros 162: partial solar eclipse of April 26, 2275
• Solar saros 163: partial solar eclipse of March 25, 2286
• Solar saros 164: partial solar eclipse of February 22, 2297

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).

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