Solar eclipse of October 23, 1976

• An annular solar eclipse on Thursday, 29 April 1976.
• A partial lunar eclipse on Thursday, 13 May 1976.
• A total solar eclipse on Saturday, 23 October 1976.
• A penumbral lunar eclipse on Saturday, 6 November 1976.

There were 8 solar eclipses (at 6 month intervals) between May 11, 1975 and October 2, 1978.

Solar eclipse series sets from 1975–1978
Descending node				Ascending node
Saros	Map	Gamma		Saros	Map	Gamma
118	1975 May 11 Partial	1.06472		123	1975 November 3 Partial	−1.02475
128	1976 April 29 Annular	0.33783		133	1976 October 23 Total	−0.32699
138	1977 April 18 Annular	−0.39903		143	1977 October 12 Total	0.38363
148	1978 April 7 Partial	−1.10812		153	1978 October 2 Partial	1.16164

Solar Saros 133, repeating every 18 years, 11 days, contains 72 events. The series started with a partial solar eclipse on July 13, 1219. It contains annular eclipses from November 20, 1435, through January 13, 1526, with a hybrid eclipse on January 24, 1544. It has total eclipses from February 3, 1562, through June 21, 2373. The series ends at member 72 as a partial eclipse on September 5, 2499. The longest duration of totality was 6 minutes, 49.97 seconds on August 7, 1850.[1] The total eclipses of this saros series are getting shorter and farther south with each iteration. All eclipses in this series occurs at the Moon’s ascending node.

Series members 30–56 occur between 1742 and 2211
30	31	32
June 3, 1742	June 13, 1760	June 24, 1778
33	34	35
July 4, 1796	July 17, 1814	July 27, 1832
36	37	38
August 7, 1850	August 18, 1868	August 29, 1886
39	40	41
September 9, 1904	September 21, 1922	October 1, 1940
42	43	44
October 12, 1958	October 23, 1976	November 3, 1994
45	46	47
November 13, 2012	November 25, 2030	December 5, 2048
48	49	50
December 17, 2066	December 27, 2084	January 8, 2103
51	52	53
January 19, 2121	January 30, 2139	February 9, 2157
54	55	56
February 21, 2175	March 3, 2193	March 15, 2211

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). All eclipses in this table occur at the Moon's ascending node.

22 eclipse events between January 5, 1935 and August 11, 2018
January 4-5	October 23-24	August 10-12	May 30-31	March 18-19
111	113	115	117	119
January 5, 1935		August 12, 1942	May 30, 1946	March 18, 1950
121	123	125	127	129
January 5, 1954	October 23, 1957	August 11, 1961	May 30, 1965	March 18, 1969
131	133	135	137	139
January 4, 1973	October 23, 1976	August 10, 1980	May 30, 1984	March 18, 1988
141	143	145	147	149
January 4, 1992	October 24, 1995	August 11, 1999	May 31, 2003	March 19, 2007
151	153	155
January 4, 2011	October 23, 2014	August 11, 2018