Template:Solar Inex series 2020 June 21
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. In the 18th century:
- Solar Saros 127: Total Solar Eclipse of 1731 Jan 08
- Solar Saros 128: Annular Solar Eclipse of 1759 Dec 19
- Solar Saros 129: Annular Solar Eclipse of 1788 Nov 27
| Inex series members between 1801 and 2200: | ||
|---|---|---|
| Near lunar perigee | After lunar apogee Before lunar perigee |
Before lunar apogee After lunar perigee |
 November 9, 1817 (Saros 130) |
 October 20, 1846 (Saros 131) |
 September 29, 1875 (Saros 132) |
 September 9, 1904 (Saros 133) |
 August 21, 1933 (Saros 134) |
 July 31, 1962 (Saros 135) |
 July 11, 1991 (Saros 136) |
 June 21, 2020 (Saros 137) |
 May 31, 2049 (Saros 138) |
 May 11, 2078 (Saros 139) |
 April 23, 2107 (Saros 140) |
 April 1, 2136 (Saros 141) |
 March 12, 2165 (Saros 142) |
 February 21, 2194 (Saros 143) |
|
In the 23rd century:
- Solar Saros 144: Annular Solar Eclipse of 2223 Feb 01
- Solar Saros 145: Total Solar Eclipse of 2252 Jan 12
- Solar Saros 146: Annular Solar Eclipse of 2280 Dec 22