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    • Source: November 1956 lunar eclipse

      • A total lunar eclipse occurred at the Moon’s descending node of orbit on Sunday, November 18, 1956, with an umbral magnitude of 1.3172. 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 about 3.4 days before perigee (on November 21, 1956, at 16:45 UTC), the Moon's apparent diameter was larger.
      This lunar eclipse was the second of an almost tetrad, with the others being on May 24, 1956 (partial); May 13, 1957 (total); and November 7, 1957 (total).


      Visibility


      The eclipse was completely visible over North America and western South America, seen rising over northeast Asia and eastern Australia and setting over eastern South America, west and central Africa, and Europe.


      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 1956

      =
      A partial lunar eclipse on May 24.
      A total solar eclipse on June 8.
      A total lunar eclipse on November 18.
      A partial solar eclipse on December 2.


      = Metonic

      =
      Preceded by: Lunar eclipse of January 29, 1953
      Followed by: Lunar eclipse of September 5, 1960


      = Tzolkinex

      =
      Preceded by: Lunar eclipse of October 7, 1949
      Followed by: Lunar eclipse of December 30, 1963


      = Half-Saros

      =
      Preceded by: Solar eclipse of November 12, 1947
      Followed by: Solar eclipse of November 23, 1965


      = Tritos

      =
      Preceded by: Lunar eclipse of December 19, 1945
      Followed by: Lunar eclipse of October 18, 1967


      = Lunar Saros 125

      =
      Preceded by: Lunar eclipse of November 7, 1938
      Followed by: Lunar eclipse of November 29, 1974


      = Inex

      =
      Preceded by: Lunar eclipse of December 8, 1927
      Followed by: Lunar eclipse of October 28, 1985


      = Triad

      =
      Preceded by: Lunar eclipse of January 17, 1870
      Followed by: Lunar eclipse of September 19, 2043


      = Lunar eclipses of 1955–1958

      =


      = Tritos series

      =
      The tritos series repeats 31 days short of 11 years at alternating nodes. Sequential events have incremental Saros cycle indices.
      This series produces 23 total eclipses between June 22, 1880 and August 9, 2120.


      = 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 annular solar eclipses of Solar Saros 132.


      See also


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


      Notes




      External links


      1956 Nov 18 chart Eclipse Predictions by Fred Espenak, NASA/GSFC

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