A total solar eclipse occurred at the Moon's ascending node of orbit between Saturday, July 20 and Sunday, July 21, 1963, with a magnitude of 1.0224. 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 at least the same size as the Sun's or larger, blocking all direct sunlight, turning day into darkness. Totality occurs in a narrow path across Earth's surface, with a partial solar eclipse visible over the surrounding region thousands of kilometres wide. Occurring about 4.1 days after perigee (on July 16, 1963, at 19:20 UTC), the Moon's apparent diameter was larger.
Astronomer Charles H. Smiley observed the eclipse from a U.S. Air Force F-104D Starfighter supersonic aircraft that was "racing the Moon's shadow" at extending the duration of totality to 4 minutes 3 seconds.
The Moon's apparent diameter was 4.8 arcseconds smaller than the January 25, 1963 annular solar eclipse. This was a total solar eclipse because it occurred in July when the Earth is near aphelion (furthest from the Sun). The Moon's apparent diameter was just over 2.2% larger than the Sun's.
Totality was visible from Hokkaido in Japan and Kuril Islands in Soviet Union (now belonging to Russia) on July 21, and Alaska, and Maine in the United States and also Canada on July 20. A partial eclipse was visible for parts of the eastern Soviet Union, North America, Central America, the Caribbean, far northern Europe, and northern South America.
Observations Mamoru Mohri, Japanese scientist and former NASDA astronaut, who was 15 years old and living in Hokkaido at the time, said that seeing this total solar eclipse made him want to become a scientist.
Scientists from the Dominion Observatory, University of Oxford, National Research Council Canada and University of Saskatchewan flew a Royal Canadian Air Force aircraft to observe the total eclipse at above the Great Slave Lake area. Due to the lack of navigation system in the area, the plane had to fly directly from Ottawa to Fort Simpson and then back to Ottawa, taking about 13 hours in total. On July 20, thin clouds in the Great Slave Lake area expanded to an altitude of , so no results were got from optical observations, but the instruments installed on the aircraft still recorded data. In addition, wind speeds of nearly also caused the aircraft to enter the Moon's umbra one minute ahead of schedule, west of the planned location. In addition, scientists from the Royal Astronomical Society of Canada also made radio observations in Grand-Mère, Quebec.
In popular culture The eclipse was featured in the comic strip Peanuts (July 15–20, 1963), with Linus demonstrating a safe way of observing the eclipse as opposed to looking directly at the eclipse. On the day the eclipse passed over his area, Linus was left helplessly standing in the rain with cloud cover entirely too thick to witness the eclipse.
This particular eclipse event plays an important part in two of Stephen King's novels, Gerald's Game (1992) and Dolores Claiborne (1992).
The eclipse is mentioned in passing in John Updike' s novel Couples (1968) in relation to Piet and Foxy.
The eclipse was featured in the season 3 episode of Mad Men entitled "Seven Twenty Three" (2009, S03E07).AMC (2011). Episode 7: Seven Twenty Three (Details tab). Originally retrieved from http://www.amctv.com/shows/mad-men/episodes/season-3/seven-twenty-three. Archived on 2011-04-11 at https://web.archive.org/web/20110411231230/http://www.amctv.com/shows/mad-men/episodes/season-3/seven-twenty-three.
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.
+July 20, 1963 Solar Eclipse Times Event Time (UTC) First Penumbral External Contact 1963 July 20 at 18:04:48.2 UTC First Umbral External Contact 1963 July 20 at 19:14:15.8 UTC First Central Line 1963 July 20 at 19:14:39.4 UTC First Umbral Internal Contact 1963 July 20 at 19:15:02.9 UTC Equatorial Conjunction 1963 July 20 at 20:29:11.6 UTC Greatest Duration 1963 July 20 at 20:33:37.0 UTC Greatest Eclipse 1963 July 20 at 20:36:13.1 UTC Ecliptic Conjunction 1963 July 20 at 20:43:16.7 UTC Last Umbral Internal Contact 1963 July 20 at 21:57:31.4 UTC Last Central Line 1963 July 20 at 21:57:52.2 UTC Last Umbral External Contact 1963 July 20 at 21:58:13.0 UTC Last Penumbral External Contact 1963 July 20 at 23:07:47.0 UTC
+July 20, 1963 Solar Eclipse Parameters Parameter Value Eclipse Magnitude 1.02236 Eclipse Obscuration 1.04522 Gamma 0.65710 Sun Right Ascension 07h57m51.3s Sun Declination +20°41'02.2" Sun Semi-Diameter 15'44.3" Sun Equatorial Horizontal Parallax 08.7" Moon Right Ascension 07h58m07.4s Moon Declination +21°19'05.7" Moon Semi-Diameter 15'53.9" Moon Equatorial Horizontal Parallax 0°58'20.8" ΔT 34.8 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 July 1963 July 6Descending node (full moon) July 20Ascending node (new moon) Partial lunar eclipseLunar Saros 119 Total solar eclipseSolar Saros 145
Related eclipses Eclipses in 1963 A penumbral lunar eclipse on January 9. An annular solar eclipse on January 25. A partial lunar eclipse on July 6. A total solar eclipse on July 20. A total lunar eclipse on December 30.
Metonic Preceded by: Solar eclipse of October 2, 1959 Followed by: Solar eclipse of May 9, 1967
Tzolkinex Preceded by: Solar eclipse of June 8, 1956 Followed by: Solar eclipse of August 31, 1970
Half-Saros Preceded by: Lunar eclipse of July 16, 1954 Followed by: Lunar eclipse of July 26, 1972
Tritos Preceded by: Solar eclipse of August 20, 1952 Followed by: Solar eclipse of June 20, 1974
Solar Saros 145 Preceded by: Solar eclipse of July 9, 1945 Followed by: Solar eclipse of July 31, 1981
Inex Preceded by: Solar eclipse of August 10, 1934 Followed by: Solar eclipse of June 30, 1992
Triad Preceded by: Solar eclipse of September 17, 1876 Followed by: Solar eclipse of May 20, 2050
Solar eclipses of 1961–1964
Saros 145
Metonic series
Tritos series
Inex series
Notes
References