title: Solar eclipse of April 20, 2042
text: # Solar eclipse of April 20, 2042
  
  A total solar eclipse will occur on Sunday, April 20, 2042. 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. A total solar eclipse occurs when the Moon's apparent diameter is larger than the Sun's, blocking all direct sunlight, turning day into darkness. Totality occurs in a narrow path across Earth's surface, with the partial solar eclipse visible over a surrounding region thousands of kilometres wide. It will be seen significantly in Western Indonesia (particularly in Sumatra), Eastern Malaysia, Brunei and the Philippines.
  
  ## Images
  
  Animated path
  
  ## Related eclipses
  
  ### Solar eclipses of 2040–2043
  
  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.
  
  Solar eclipse series sets from 2040–2043 :
  
  | Ascending node | Ascending node | Descending node | Descending node |
  | - | - | - | - |
  | 119 | May 11, 2040 Partial | 124 | November 4, 2040 Annular |
  | 129 | April 30, 2041 Total | 134 | October 25, 2041 Annular |
  | 139 | April 20, 2042 Total | 144 | October 14, 2042 Annular |
  | 149 | April 9, 2043 Total (non-central) | 154 | October 3, 2043 Annular (non-central) |
  
  ### Saros 139
  
  It is a part of saros series 139, repeating every 18 years, 11 days, 8 hours, containing 71 events. The series started with partial solar eclipse on May 17, 1501. It contains hybrid eclipses on August 11, 1627 through to December 9, 1825 and total eclipses from December 21, 1843 through to March 26, 2601. The series ends at member 71 as a partial eclipse on July 3, 2763. Its eclipses are entabulated in three columns; each one in the same column, every third eclipse, is one exeligmos apart so cast shadows over approximately the same parts of the earth.
  
  The solar eclipse of June 13, 2132 will be the longest total solar eclipse since July 11, 1991 at 6 minutes, 55.02 seconds.
  
  The longest duration of totality will be produced by member 39 at 7 minutes, 29.22 seconds on July 16, 2186. After that date each duration will decrease, until the series end. This date is the longest solar eclipse computed between 4000 BC and 6000 AD. Saros series eclipses are during the Moon’s ascending node (a term related to our equator and polar-naming conventions).
  
  Series members 24–45 occur between 1901 and 2300 :
  
  | 24 | 25 | 26 |
  | - | - | - |
  | February 3, 1916 | February 14, 1934 | February 25, 1952 |
  | 27 | 28 | 29 |
  | March 7, 1970 | March 18, 1988 | March 29, 2006 |
  | 30 | 31 | 32 |
  | April 8, 2024 | April 20, 2042 | April 30, 2060 |
  | 33 | 34 | 35 |
  | May 11, 2078 | May 22, 2096 | June 3, 2114 |
  | 36 | 37 | 38 |
  | June 13, 2132 | June 25, 2150 | July 5, 2168 |
  | 39 | 40 | 41 |
  | July 16, 2186 | July 27, 2204 | August 8, 2222 |
  | 42 | 43 | 44 |
  | August 18, 2240 | August 29, 2258 | September 9, 2276 |
  | 45 |
  | September 20, 2294 |
  
  ### Inex series
  
  This eclipse is a part of the long period inex cycle, repeating at alternating nodes, every 358 synodic months (≈ 10,571.95 days, or 29 years minus 20 days). Their appearance and longitude are irregular due to a lack of synchronization with the anomalistic month (period of perigee). However, groupings of 3 inex cycles (≈ 87 years minus 2 months) comes close (≈ 1,151.02 anomalistic months), so eclipses are similar in these groupings.
  
  Inex series members between 1901 and 2100: :
  
  | July 9, 1926 (Saros 135) | June 20, 1955 (Saros 136) | May 30, 1984 (Saros 137) |
  | - | - | - |
  | May 10, 2013 (Saros 138) | April 20, 2042 (Saros 139) | March 31, 2071 (Saros 140) |
  | March 10, 2100 (Saros 141) | |
  
  ### 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). All eclipses in this table occur at the Moon's ascending node.
  
  21 eclipse events, progressing from south to north between July 1, 2000 and July 1, 2076 :
  
  | July 1–2 | April 19–20 | February 5–7 | November 24–25 | September 12–13 |
  | - | - | - | - | - |
  | 117 | 119 | 121 | 123 | 125 |
  | July 1, 2000 | April 19, 2004 | February 7, 2008 | November 25, 2011 | September 13, 2015 |
  | 127 | 129 | 131 | 133 | 135 |
  | July 2, 2019 | April 20, 2023 | February 6, 2027 | November 25, 2030 | September 12, 2034 |
  | 137 | 139 | 141 | 143 | 145 |
  | July 2, 2038 | April 20, 2042 | February 5, 2046 | November 25, 2049 | September 12, 2053 |
  | 147 | 149 | 151 | 153 | 155 |
  | July 1, 2057 | April 20, 2061 | February 5, 2065 | November 24, 2068 | September 12, 2072 |
  | 157 | 159 | 161 | 163 | 165 |
  | July 1, 2076 | | | | |
  