Solar eclipse of May 31, 2003

• A total lunar eclipse on May 16.
• An annular solar eclipse (one limit) on May 31.
• A total lunar eclipse on November 9.
• A total solar eclipse on November 23.

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: Partial solar eclipses on February 5, 2000 and July 31, 2000 occur in the previous lunar year set.

Solar eclipse series sets from 2000–2003
Ascending node				Descending node
Saros	Map	Gamma		Saros	Map	Gamma
117	2000 July 1 Partial (south)	-1.28214		122	2000 December 25 Partial (north)	1.13669
127 Totality from Lusaka, Zambia	2001 June 21 Total	-0.57013		132 Partial from Minneapolis, MN	2001 December 14 Annular	0.40885
137 Partial from Los Angeles, CA	2002 June 10 Annular	0.19933		142 Totality from Woomera	2002 December 4 Total	-0.30204
147 Partial from Belfort	2003 May 31 Annular	0.99598		152	2003 November 23 Total	-0.96381

Solar saros 147, repeating every about 18 years and 11 days, contains 80 events. The series started with a partial solar eclipse on October 12, 1624. It has annular eclipses from May 31, 2003, to July 31, 2706. There are no total eclipses in this series. The series ends at member 80 as a partial eclipse on February 24, 3049. The longest annular eclipse will be on November 21, 2291, at 9 minutes and 41 seconds.[2]

Series members 17–27 occur between 1901 and 2100:
17	18	19
April 6, 1913	April 18, 1931	April 28, 1949
20	21	22
May 9, 1967	May 19, 1985	May 31, 2003
23	24	25
June 10, 2021	June 21, 2039	July 1, 2057
26	27
July 13, 2075	July 23, 2093

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 1901 and 2100
March 6, 1905 (Saros 138)	February 3, 1916 (Saros 139)	January 3, 1927 (Saros 140)
December 2, 1937 (Saros 141)	November 1, 1948 (Saros 142)	October 2, 1959 (Saros 143)
August 31, 1970 (Saros 144)	July 31, 1981 (Saros 145)	June 30, 1992 (Saros 146)
May 31, 2003 (Saros 147)	April 29, 2014 (Saros 148)	March 29, 2025 (Saros 149)
February 27, 2036 (Saros 150)	January 26, 2047 (Saros 151)	December 26, 2057 (Saros 152)
November 24, 2068 (Saros 153)	October 24, 2079 (Saros 154)	September 23, 2090 (Saros 155)

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	157	159
January 4, 2011	October 23, 2014	August 11, 2018