Solar eclipse of April 18, 1977

An annular solar eclipse occurred at the Moon's descending node of orbit on Monday, April 18, 1977, with a magnitude of 0.9449. 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 in South West Africa (today's Namibia), Angola, Zambia, southeastern Zaire (today's Democratic Republic of Congo), northern Malawi, Tanzania, Seychelles and the whole British Indian Ocean Territory.

Eclipses in 1977

 * A partial lunar eclipse on April 4, 1977.
 * An annular solar eclipse on April 18, 1977.
 * A penumbral lunar eclipse on September 27, 1977.
 * A total solar eclipse on October 12, 1977.

Metonic

 * Preceded by: Solar eclipse of June 30, 1973
 * Followed by: Solar eclipse of February 4, 1981

Tzolkinex

 * Preceded by: Solar eclipse of March 7, 1970
 * Followed by: Solar eclipse of May 30, 1984

Half-Saros

 * Preceded by: Lunar eclipse of April 13, 1968
 * Followed by: Lunar eclipse of April 24, 1986

Tritos

 * Preceded by: Solar eclipse of May 20, 1966
 * Followed by: Solar eclipse of March 18, 1988

Solar Saros 138

 * Preceded by: Solar eclipse of April 8, 1959
 * Followed by: Solar eclipse of April 29, 1995

Inex

 * Preceded by: Solar eclipse of May 9, 1948
 * Followed by: Solar eclipse of March 29, 2006

Triad

 * Preceded by: Solar eclipse of June 17, 1890
 * Followed by: Solar eclipse of February 17, 2064