Solar eclipse of February 14, 1915

Solar eclipse of February 14, 1915
Solar eclipse of February 14, 1915
	Map
Type of eclipse
Nature	Annular
Gamma	-0.2024
Magnitude	0.9789
Maximum eclipse
Duration	124 sec (2 m 4 s)
Coordinates	24°00′S 120°42′E / 24°S 120.7°E
Max. width of band	77 km (48 mi)
Times (UTC)
Greatest eclipse	4:33:20
References
Saros	129 (46 of 80)
Catalog # (SE5000)	9315

An annular solar eclipse occurred on February 14, 1915, also known as “The 1915 Valentine’s Day eclipse”. A solar eclipse occurs when the Moon passes between Earth and the Sun, thereby totally or partly obscuring the image of the Sun for a viewer on Earth. An annular solar eclipse occurs when the Moon's apparent diameter is smaller than the Sun's, blocking most of the Sun's light and causing the Sun to look like an annulus (ring). An annular eclipse appears as a partial eclipse over a region of the Earth thousands of kilometres wide. Annularity was visible from Australia, Papua in Dutch East Indies (today's Indonesia), German New Guinea (now belonging to Papua New Guinea), and South Pacific Mandate in Japan (the parts now belonging to FS Micronesia and Marshall Islands, including Palikir).

Related eclipses[]

Solar eclipses of 1913–1917[]

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

Saros 129[]

It is a part of Saros cycle 129, repeating every 18 years, 11 days, containing 80 events. The series started with partial solar eclipse on October 3, 1103. It contains annular eclipses on May 6, 1464 through March 18, 1969, hybrid eclipses from March 29, 1987 through April 20, 2023 and total eclipses from April 30, 2041 through July 26, 2185. The series ends at member 80 as a partial eclipse on February 21, 2528. The longest duration of totality was 3 minutes, 43 seconds on June 25, 2131 . All eclipses in this series occurs at the Moon’s ascending node.^[2]

Series members 46–56 occur between 1901 and 2100:
46	47	48
February 14, 1915	February 24, 1933	March 7, 1951
49	50	51
March 18, 1969	March 29, 1987	April 8, 2005
52	53	54
April 20, 2023	April 30, 2041	May 11, 2059
55	56
May 22, 2077	June 2, 2095

Tritos series[]

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)