Solar eclipse of August 31, 1913

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 1913–1917
Descending node			Ascending node
114	August 31, 1913 Partial		119	February 25, 1914 Annular
124	August 21, 1914 Total		129	February 14, 1915 Annular
134	August 10, 1915 Annular		139	February 3, 1916 Total
144	July 30, 1916 Annular		149	January 23, 1917 Partial
154	July 19, 1917 Partial

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, progressing from north to south between April 8, 1902, and August 31, 1989:
April 7–8	January 24–25	November 12	August 31-September 1	June 19–20
108			114	116
April 8, 1902			August 31, 1913	June 19, 1917
118	120	122	124	126
April 8, 1921	January 24, 1925	November 12, 1928	August 31, 1932	June 19, 1936
128	130	132	134	136
April 7, 1940	January 25, 1944	November 12, 1947	September 1, 1951	June 20, 1955
138	140	142	144	146
April 8, 1959	January 25, 1963	November 12, 1966	August 31, 1970	June 20, 1974
148	150	152	154
April 7, 1978	January 25, 1982	November 12, 1985	August 31, 1989