# Solar eclipse of May 21, 1993

A partial solar eclipse occurred at the Moon's descending node of orbit on Friday, May 21, 1993, with a magnitude of 0.7352. 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 partial solar eclipse occurs in the polar regions of the Earth when the center of the Moon's shadow misses the Earth.
A partial eclipse was visible for parts of Alaska, Canada, Greenland, the United States, and Northern Europe.

## Eclipse details

Shown below are two tables displaying details about this particular solar eclipse. The first table outlines times at which the moon's penumbra or umbra attains the specific parameter, and the second table describes various other parameters pertaining to this eclipse.
May 21, 1993 Solar Eclipse Times :
| Event | Time (UTC) |
| First Penumbral External Contact | 1993 May 21 at 12:19:45.7 UTC |
| Ecliptic Conjunction | 1993 May 21 at 14:07:30.6 UTC |
| Greatest Eclipse | 1993 May 21 at 14:20:14.6 UTC |
| Equatorial Conjunction | 1993 May 21 at 14:34:45.0 UTC |
| Last Penumbral External Contact | 1993 May 21 at 16:20:31.6 UTC |
May 21, 1993 Solar Eclipse Parameters :
| Parameter | Value |
| Eclipse Magnitude | 0.73519 |
| Eclipse Obscuration | 0.65896 |
| Gamma | 1.13720 |
| Sun Right Ascension | 03h53m29.8s |
| Sun Declination | +20°15'44.4" |
| Sun Semi-Diameter | 15'48.0" |
| Sun Equatorial Horizontal Parallax | 08.7" |
| Moon Right Ascension | 03h52m59.3s |
| Moon Declination | +21°18'54.5" |
| Moon Semi-Diameter | 15'16.2" |
| Moon Equatorial Horizontal Parallax | 0°56'02.5" |
| ΔT | 59.4 s |

## 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.
Eclipse season of May–June 1993 :
| May 21 Descending node (new moon) | June 4 Ascending node (full moon) |
| Partial solar eclipse Solar Saros 118 | Total lunar eclipse Lunar Saros 130 |

## Related eclipses
### Eclipses in 1993

* A partial solar eclipse on May 21.
* A total lunar eclipse on June 4.
* A partial solar eclipse on November 13.
* A total lunar eclipse on November 29.

### Metonic

* Followed by: Solar eclipse of March 9, 1997

### Tzolkinex

* Preceded by: Solar eclipse of April 9, 1986
* Followed by: Solar eclipse of July 1, 2000

### Half-Saros

* Preceded by: Lunar eclipse of May 15, 1984
* Followed by: Lunar eclipse of May 26, 2002

### Tritos

* Preceded by: Solar eclipse of June 21, 1982
* Followed by: Solar eclipse of April 19, 2004

### Solar Saros 118

* Preceded by: Solar eclipse of May 11, 1975
* Followed by: Solar eclipse of June 1, 2011

### Inex

* Preceded by: Solar eclipse of June 10, 1964
* Followed by: Solar eclipse of April 30, 2022

### Triad

* Preceded by: Solar eclipse of July 21, 1906
* Followed by: Solar eclipse of March 21, 2080

### Solar eclipses of 1993–1996

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 1993 to 1996 :
| Descending node | Descending node | Descending node | Ascending node | Ascending node | Ascending node |
| Saros | Map | Gamma | Saros | Map | Gamma |
| 118 | May 21, 1993 Partial | 1.1372 | 123 | November 13, 1993 Partial | −1.0411 |
| 128 Partial in Bismarck, ND, USA | May 10, 1994 Annular | 0.4077 | 133 Totality in Bolivia | November 3, 1994 Total | −0.3522 |
| 138 | April 29, 1995 Annular | −0.3382 | 143 Totality in Dundlod, India | October 24, 1995 Total | 0.3518 |
| 148 | April 17, 1996 Partial | −1.058 | 153 | October 12, 1996 Partial | 1.1227 |

### Saros 118

This eclipse is a part of Saros series 118, repeating every 18 years, 11 days, and containing 72 events. The series started with a partial solar eclipse on May 24, 803 AD. It contains total eclipses from August 19, 947 AD through October 25, 1650; hybrid eclipses on November 4, 1668 and November 15, 1686; and annular eclipses from November 27, 1704 through April 30, 1957. The series ends at member 72 as a partial eclipse on July 15, 2083. Its eclipses are tabulated in three columns; every third eclipse in the same column is one exeligmos apart, so they all cast shadows over approximately the same parts of the Earth.
The longest duration of totality was produced by member 34 at 6 minutes, 59 seconds on May 16, 1398, and the longest duration of annularity was produced by member 59 at 1 minutes, 58 seconds on February 23, 1849. All eclipses in this series occur at the Moon’s descending node of orbit.
Series members 57–72 occur between 1801 and 2083: :
| 57 | 58 | 59 |
| February 1, 1813 | February 12, 1831 | February 23, 1849 |
| 60 | 61 | 62 |
| March 6, 1867 | March 16, 1885 | March 29, 1903 |
| 63 | 64 | 65 |
| April 8, 1921 | April 19, 1939 | April 30, 1957 |
| 66 | 67 | 68 |
| May 11, 1975 | May 21, 1993 | June 1, 2011 |
| 69 | 70 | 71 |
| June 12, 2029 | June 23, 2047 | July 3, 2065 |
| 72 |
| July 15, 2083 |

### 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 descending node.
21 eclipse events between May 21, 1993 and May 20, 2069 :
| May 20–21 | March 9 | December 25–26 | October 13–14 | August 1–2 |
| 118 | 120 | 122 | 124 | 126 |
| May 21, 1993 | March 9, 1997 | December 25, 2000 | October 14, 2004 | August 1, 2008 |
| 128 | 130 | 132 | 134 | 136 |
| May 20, 2012 | March 9, 2016 | December 26, 2019 | October 14, 2023 | August 2, 2027 |
| 138 | 140 | 142 | 144 | 146 |
| May 21, 2031 | March 9, 2035 | December 26, 2038 | October 14, 2042 | August 2, 2046 |
| 148 | 150 | 152 | 154 | 156 |
| May 20, 2050 | March 9, 2054 | December 26, 2057 | October 13, 2061 | August 2, 2065 |
| 158 |
| May 20, 2069 |

### Tritos series

This eclipse is a part of a tritos cycle, repeating at alternating nodes every 135 synodic months (≈ 3986.63 days, or 11 years minus 1 month). Their appearance and longitude are irregular due to a lack of synchronization with the anomalistic month (period of perigee), but groupings of 3 tritos cycles (≈ 33 years minus 3 months) come close (≈ 434.044 anomalistic months), so eclipses are similar in these groupings.
The partial solar eclipses on March 27, 1884 (part of Saros 108) and December 24, 1916 (part of Saros 111) are also a part of this series but are not included in the table below.
Series members between 1971 and 2200 :
| July 22, 1971 (Saros 116) | June 21, 1982 (Saros 117) | May 21, 1993 (Saros 118) | April 19, 2004 (Saros 119) | March 20, 2015 (Saros 120) |
| February 17, 2026 (Saros 121) | January 16, 2037 (Saros 122) | December 16, 2047 (Saros 123) | November 16, 2058 (Saros 124) | October 15, 2069 (Saros 125) |
| September 13, 2080 (Saros 126) | August 15, 2091 (Saros 127) | July 15, 2102 (Saros 128) | June 13, 2113 (Saros 129) | May 14, 2124 (Saros 130) |
| April 13, 2135 (Saros 131) | March 12, 2146 (Saros 132) | February 9, 2157 (Saros 133) | January 10, 2168 (Saros 134) | December 9, 2178 (Saros 135) |
| November 8, 2189 (Saros 136) | October 9, 2200 (Saros 137) |

### 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.
Series members between 1801 and 2200 :
| September 19, 1819 (Saros 112) | August 28, 1848 (Saros 113) | August 9, 1877 (Saros 114) |
| July 21, 1906 (Saros 115) | June 30, 1935 (Saros 116) | June 10, 1964 (Saros 117) |
| May 21, 1993 (Saros 118) | April 30, 2022 (Saros 119) | April 11, 2051 (Saros 120) |
| March 21, 2080 (Saros 121) | March 1, 2109 (Saros 122) | February 9, 2138 (Saros 123) |
| January 21, 2167 (Saros 124) | December 31, 2195 (Saros 125) | |