Solar eclipse of April 8, 1921

Solar eclipse of April 8, 1921
	Map
Type of eclipse
Nature	Annular
Gamma	0.8869
Magnitude	0.9753
Maximum eclipse
Duration	110 sec (1 m 50 s)
Coordinates	64.5°N 5.6°E
Max. width of band	192 km (119 mi)
Times (UTC)
Greatest eclipse	9:15:01
References
Saros	118 (63 of 72)
Catalog # (SE5000)	9330

An annular solar eclipse occurred on April 8, 1921. 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 northern Scotland, northwestern tip of Norway, and islands in the Arctic Ocean in Russian SFSR.

Related eclipses

Solar eclipses 1921–1924

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 1921–1924
Descending node		Ascending node
118	April 8, 1921 Annular	123	October 1, 1921 Total
128	March 28, 1922 Annular	133	September 21, 1922 Total
138	March 17, 1923 Annular	143	September 10, 1923 Total
148	March 5, 1924 Partial	153	August 30, 1924 Partial

Saros 118

This eclipse is a part of Saros cycle 118, repeating every 18 years, 11 days, containing 72 events. The series started with partial solar eclipse on May 24, 803 AD. It contains total eclipses from August 19, 947 AD through October 25, 1650, hybrid eclipses on November 4, 1668 and November 15, 1686, and annular eclipses from November 27, 1704 through April 30, 1957. The series ends at member 72 as a partial eclipse on July 15, 2083. The longest duration of total was 6 minutes, 59 seconds on May 16, 1398.

Series members 62–72 occur between 1901 and 2083:
62	63	64
Mar 29, 1903	Apr 8, 1921	Apr 19, 1939
65	66	67
Apr 30, 1957	May 11, 1975	May 21, 1993
68	69	70
Jun 1, 2011	Jun 12, 2029	Jun 23, 2047
71	72
Jul 3, 2065	Jul 15, 2083

Metonic series

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

Notes

van Gent, R.H. "Solar- and Lunar-Eclipse Predictions from Antiquity to the Present". A Catalogue of Eclipse Cycles. Utrecht University. Retrieved 6 October 2018.

References

Earth visibility chart and eclipse statistics Eclipse Predictions by Fred Espenak, NASA/GSFC
- Besselian elements

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[1] van Gent, R.H. "Solar- and Lunar-Eclipse Predictions from Antiquity to the Present". A Catalogue of Eclipse Cycles. Utrecht University. Retrieved 6 October 2018.