2006-09-12 12:12:05 · 7 answers · asked by powertownbooks 1 in Science & Mathematics ➔ Weather
An equinox in astronomy is the moment when the Sun is located right over the equator. When this happens, the duration of day and night are closest to being equal at all locations around the globe.
It happens twice per year.
2006-09-12 12:16:56 · answer #1 · answered by tbom_01 4 · 0⤊ 0⤋
An Equinox is either of the 2 times each year when the sun crosses the equator and day & night are everywhere on earth of approximately the same lenght.
2006-09-13 08:10:17 · answer #2 · answered by Craig W 4 · 0⤊ 0⤋
There are two equinoxs, spring equinox and fall equinox. Spring equinox is the first day of spring and falls on March 22. The fall equinox is the first day of fall and falls on September 22.
We also have two solstices, winter solstice and summer solstice. Winter solstice falls on December 21 and is the first day of winter. Summer solstice falls on June 21 and is the first day of summer. Summer solstice is the longest day of the year and winter solstice is the shortest day of the year in the northern hemisphere. The equinoxes are the mid-points between the solstices. Hope this helps.
2006-09-12 12:20:56 · answer #3 · answered by Anonymous · 0⤊ 0⤋
the time when the sun crosses the plane of the earth's equator, making night and day of approximately equal length all over the earth and occurring about March 21
2006-09-12 13:30:41 · answer #4 · answered by Jeanette 2 · 0⤊ 0⤋
When day and night are of equal length; on 21st or 22nd of March and September.
2006-09-12 12:25:20 · answer #5 · answered by zee_prime 6 · 0⤊ 0⤋
A chevorlet SUV
2006-09-12 12:17:43 · answer #6 · answered by monts 2 · 0⤊ 0⤋
http://scienceworld.wolfram.com/astronomy/Equinox.html
2006-09-12 12:19:19 · answer #7 · answered by williegod 6 · 0⤊ 0⤋