# Solar eclipse of December 25, 1935

An annular solar eclipse occurred at the Moon's ascending node of orbit on Wednesday, December 25, 1935, with a magnitude of 0.9752. 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. An annular solar eclipse occurs when the Moon's apparent diameter is smaller than the Sun's, blocking most of the Sun's light and causing the Sun to look like an annulus (ring). An annular eclipse appears as a partial eclipse over a region of the Earth thousands of kilometres wide. The Moon's apparent diameter was near the average diameter because it occurred 7.7 days after apogee (on December 18, 1935, at 2:40 UTC) and 4.8 days before perigee (on December 30, 1935, at 15:10 UTC).
This was the last of five solar eclipses in 1935, with the others occurring on January 5, February 3, June 30, and July 30. The next time this will occur is 2206.
Annularity was visible from parts of Antarctica. A partial eclipse was visible for parts of Antarctica, southern South America, and New Zealand.
It was the first solar eclipse to fall on Christmas Day since 1685, and the last until the 1954 eclipse.$^{:137}$

## 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.
December 25, 1935 Solar Eclipse Times :
| Event | Time (UTC) |
| First Penumbral External Contact | 1935 December 25 at 15:42:21.2 UTC |
| First Umbral External Contact | 1935 December 25 at 17:15:44.8 UTC |
| First Central Line | 1935 December 25 at 17:18:14.4 UTC |
| Greatest Duration | 1935 December 25 at 17:18:14.4 UTC |
| First Umbral Internal Contact | 1935 December 25 at 17:20:52.1 UTC |
| Equatorial Conjunction | 1935 December 25 at 17:47:27.1 UTC |
| Ecliptic Conjunction | 1935 December 25 at 17:49:48.0 UTC |
| Greatest Eclipse | 1935 December 25 at 17:59:51.8 UTC |
| Last Umbral Internal Contact | 1935 December 25 at 18:39:02.7 UTC |
| Last Central Line | 1935 December 25 at 18:41:37.4 UTC |
| Last Umbral External Contact | 1935 December 25 at 18:44:04.0 UTC |
| Last Penumbral External Contact | 1935 December 25 at 20:17:22.0 UTC |
December 25, 1935 Solar Eclipse Parameters :
| Parameter | Value |
| Eclipse Magnitude | 0.97525 |
| Eclipse Obscuration | 0.95112 |
| Gamma | −0.92279 |
| Sun Right Ascension | 18h13m12.8s |
| Sun Declination | -23°24'47.6" |
| Sun Semi-Diameter | 16'15.8" |
| Sun Equatorial Horizontal Parallax | 08.9" |
| Moon Right Ascension | 18h13m41.2s |
| Moon Declination | -24°17'40.0" |
| Moon Semi-Diameter | 15'46.2" |
| Moon Equatorial Horizontal Parallax | 0°57'52.6" |
| ΔT | 23.7 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 December 1935–January 1936 :
| December 25 Ascending node (new moon) | January 8 Descending node (full moon) |
| Annular solar eclipse Solar Saros 121 | Total lunar eclipse Lunar Saros 133 |

## Related eclipses
### Eclipses in 1935

* A partial solar eclipse on January 5.
* A total lunar eclipse on January 19.
* A partial solar eclipse on February 3.
* A partial solar eclipse on June 30.
* A total lunar eclipse on July 16.
* A partial solar eclipse on July 30.
* An annular solar eclipse on December 25.

### Metonic

* Preceded by: Solar eclipse of March 7, 1932
* Followed by: Solar eclipse of October 12, 1939

### Tzolkinex

* Preceded by: Solar eclipse of November 12, 1928
* Followed by: Solar eclipse of February 4, 1943

### Half-Saros

* Preceded by: Lunar eclipse of December 19, 1926
* Followed by: Lunar eclipse of December 29, 1944

### Tritos

* Preceded by: Solar eclipse of January 24, 1925
* Followed by: Solar eclipse of November 23, 1946

### Solar Saros 121

* Preceded by: Solar eclipse of December 14, 1917
* Followed by: Solar eclipse of January 5, 1954

### Inex

* Preceded by: Solar eclipse of January 14, 1907
* Followed by: Solar eclipse of December 4, 1964

### Triad

* Preceded by: Solar eclipse of February 23, 1849
* Followed by: Solar eclipse of October 25, 2022

### Solar eclipses of 1935–1938

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.
The partial solar eclipses on February 3, 1935 and July 30, 1935 occur in the previous lunar year eclipse set.
Solar eclipse series sets from 1935 to 1938 :
| Ascending node | Ascending node | Ascending node | Descending node | Descending node | Descending node |
| Saros | Map | Gamma | Saros | Map | Gamma |
| 111 | January 5, 1935 Partial | −1.5381 | 116 | June 30, 1935 Partial | 1.3623 |
| 121 | December 25, 1935 Annular | −0.9228 | 126 | June 19, 1936 Total | 0.5389 |
| 131 | December 13, 1936 Annular | −0.2493 | 136 Totality in Kanton Island, Kiribati | June 8, 1937 Total | −0.2253 |
| 141 | December 2, 1937 Annular | 0.4389 | 146 | May 29, 1938 Total | −0.9607 |
| 151 | November 21, 1938 Partial | 1.1077 |

### Saros 121

This eclipse is a part of Saros series 121, repeating every 18 years, 11 days, and containing 71 events. The series started with a partial solar eclipse on April 25, 944 AD. It contains total eclipses from July 10, 1070 through October 9, 1809; hybrid eclipses on October 20, 1827 and October 30, 1845; and annular eclipses from November 11, 1863 through February 28, 2044. The series ends at member 71 as a partial eclipse on June 7, 2206. 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 39 at 6 minutes, 20 seconds on June 21, 1629, and the longest duration of annularity will be produced by member 62 at 2 minutes, 27 seconds on February 28, 2044. All eclipses in this series occur at the Moon’s ascending node of orbit.
Series members 49–70 occur between 1801 and 2200: :
| 49 | 50 | 51 |
| October 9, 1809 | October 20, 1827 | October 30, 1845 |
| 52 | 53 | 54 |
| November 11, 1863 | November 21, 1881 | December 3, 1899 |
| 55 | 56 | 57 |
| December 14, 1917 | December 25, 1935 | January 5, 1954 |
| 58 | 59 | 60 |
| January 16, 1972 | January 26, 1990 | February 7, 2008 |
| 61 | 62 | 63 |
| February 17, 2026 | February 28, 2044 | March 11, 2062 |
| 64 | 65 | 66 |
| March 21, 2080 | April 1, 2098 | April 13, 2116 |
| 67 | 68 | 69 |
| April 24, 2134 | May 4, 2152 | May 16, 2170 |
| 70 |
| May 26, 2188 |

### 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.
22 eclipse events between December 24, 1916 and July 31, 2000 :
| December 24–25 | October 12 | July 31–August 1 | May 19–20 | March 7 |
| 111 | 113 | 115 | 117 | 119 |
| December 24, 1916 | | July 31, 1924 | May 19, 1928 | March 7, 1932 |
| 121 | 123 | 125 | 127 | 129 |
| December 25, 1935 | October 12, 1939 | August 1, 1943 | May 20, 1947 | March 7, 1951 |
| 131 | 133 | 135 | 137 | 139 |
| December 25, 1954 | October 12, 1958 | July 31, 1962 | May 20, 1966 | March 7, 1970 |
| 141 | 143 | 145 | 147 | 149 |
| December 24, 1973 | October 12, 1977 | July 31, 1981 | May 19, 1985 | March 7, 1989 |
| 151 | 153 | 155 |
| December 24, 1992 | October 12, 1996 | July 31, 2000 |

### 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.
Series members between 1801 and 2200 :
| January 1, 1805 (Saros 109) | | October 31, 1826 (Saros 111) | | August 28, 1848 (Saros 113) |
| July 29, 1859 (Saros 114) | June 28, 1870 (Saros 115) | May 27, 1881 (Saros 116) | April 26, 1892 (Saros 117) | March 29, 1903 (Saros 118) |
| February 25, 1914 (Saros 119) | January 24, 1925 (Saros 120) | December 25, 1935 (Saros 121) | November 23, 1946 (Saros 122) | October 23, 1957 (Saros 123) |
| September 22, 1968 (Saros 124) | August 22, 1979 (Saros 125) | July 22, 1990 (Saros 126) | June 21, 2001 (Saros 127) | May 20, 2012 (Saros 128) |
| April 20, 2023 (Saros 129) | March 20, 2034 (Saros 130) | February 16, 2045 (Saros 131) | January 16, 2056 (Saros 132) | December 17, 2066 (Saros 133) |
| November 15, 2077 (Saros 134) | October 14, 2088 (Saros 135) | September 14, 2099 (Saros 136) | August 15, 2110 (Saros 137) | July 14, 2121 (Saros 138) |
| June 13, 2132 (Saros 139) | May 14, 2143 (Saros 140) | April 12, 2154 (Saros 141) | March 12, 2165 (Saros 142) | February 10, 2176 (Saros 143) |
| January 9, 2187 (Saros 144) | December 9, 2197 (Saros 145) |

### 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 :
| March 14, 1820 (Saros 117) | February 23, 1849 (Saros 118) | February 2, 1878 (Saros 119) |
| January 14, 1907 (Saros 120) | December 25, 1935 (Saros 121) | December 4, 1964 (Saros 122) |
| November 13, 1993 (Saros 123) | October 25, 2022 (Saros 124) | October 4, 2051 (Saros 125) |
| September 13, 2080 (Saros 126) | August 26, 2109 (Saros 127) | August 5, 2138 (Saros 128) |
| July 16, 2167 (Saros 129) | June 26, 2196 (Saros 130) | |