Solar eclipse of February 25, 1971

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 1968–1971
Ascending node				Descending node
Saros	Map	Gamma		Saros	Map	Gamma
119	1968 March 28 Partial	−1.03704		124	1968 September 22 Total	0.94507
129	1969 March 18 Annular	−0.27037		134	1969 September 11 Annular	0.22014
139	1970 March 7 Total	0.44728		144	1970 August 31 Annular	−0.53640
149	1971 February 25 Partial	1.11876		154	1971 August 20 Partial	−1.26591
A partial solar eclipse of July 22, 1971 occurs in the next lunar year set.

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