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    • Source: May 1920 lunar eclipse

      • A total lunar eclipse occurred at the Moon’s ascending node of orbit on Monday, May 3, 1920, with an umbral magnitude of 1.2194. A lunar eclipse occurs when the Moon moves into the Earth's shadow, causing the Moon to be darkened. A total lunar eclipse occurs when the Moon's near side entirely passes into the Earth's umbral shadow. Unlike a solar eclipse, which can only be viewed from a relatively small area of the world, a lunar eclipse may be viewed from anywhere on the night side of Earth. A total lunar eclipse can last up to nearly two hours, while a total solar eclipse lasts only a few minutes at any given place, because the Moon's shadow is smaller. Occurring only about 3.8 days before apogee (on May 6, 1920, at 21:00 UTC), the Moon's apparent diameter was smaller.
      This lunar eclipse was the first of an almost tetrad, with the others being on October 27, 1920 (total); April 22, 1921 (total); and October 16, 1921 (partial).


      Visibility


      The eclipse was completely visible over South America, west and southern Africa, western Europe, and Antarctica, seen rising over much of North America and the eastern Pacific Ocean and setting over eastern Europe, east Africa, and the western half of Asia.


      Eclipse details


      Shown below is a table displaying details about this particular solar eclipse. It describes various parameters pertaining to this eclipse.


      Eclipse season



      This eclipse is part of an eclipse season, a period, roughly every six months, when eclipses occur. Only two (or occasionally three) eclipse seasons occur each year, and each season lasts about 35 days and repeats just short of six months (173 days) later; thus two full eclipse seasons always occur each year. Either two or three eclipses happen each eclipse season. In the sequence below, each eclipse is separated by a fortnight.


      Related eclipses




      = Eclipses in 1920

      =
      A total lunar eclipse on May 3.
      A partial solar eclipse on May 18.
      A total lunar eclipse on October 27.
      A partial solar eclipse on November 10.


      = Metonic

      =
      Preceded by: Lunar eclipse of July 15, 1916
      Followed by: Lunar eclipse of February 20, 1924


      = Tzolkinex

      =
      Preceded by: Lunar eclipse of March 22, 1913
      Followed by: Lunar eclipse of June 15, 1927


      = Half-Saros

      =
      Preceded by: Solar eclipse of April 28, 1911
      Followed by: Solar eclipse of May 9, 1929


      = Tritos

      =
      Preceded by: Lunar eclipse of June 4, 1909
      Followed by: Lunar eclipse of April 2, 1931


      = Lunar Saros 120

      =
      Preceded by: Lunar eclipse of April 22, 1902
      Followed by: Lunar eclipse of May 14, 1938


      = Inex

      =
      Preceded by: Lunar eclipse of May 23, 1891
      Followed by: Lunar eclipse of April 13, 1949


      = Triad

      =
      Preceded by: Lunar eclipse of July 2, 1833
      Followed by: Lunar eclipse of March 3, 2007


      = Lunar eclipses of 1919–1922

      =


      = Half-Saros cycle

      =
      A lunar eclipse will be preceded and followed by solar eclipses by 9 years and 5.5 days (a half saros). This lunar eclipse is related to two total solar eclipses of Solar Saros 127.


      See also


      List of lunar eclipses
      List of 20th-century lunar eclipses


      Notes




      External links


      1920 May 03 chart Eclipse Predictions by Fred Espenak, NASA/GSFC

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