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The September equinox (or southward equinox) is the moment when the Sun appears to cross the celestial equator, heading southward. Because of differences between the calendar year and the tropical year, the September equinox may occur from September 21 to 24. At the equinox, the Sun as viewed from the equator rises due east and sets due west.
A solar equinox is a moment in time when the Sun crosses the Earth's equator, which is to say, appears directly above the equator, rather than north or south of the equator. On the day of the equinox, the Sun appears to rise "due east" and set "due west". This occurs twice each year, around 20 March and 23 September. [a]
March equinox. The March equinox[7][8] or northward equinox[9] is the equinox on the Earth when the subsolar point appears to leave the Southern Hemisphere and cross the celestial equator, heading northward as seen from Earth. The March equinox is known as the vernal equinox (spring equinox) in the Northern Hemisphere and as the autumnal ...
The fall equinox, also known as the autumnal equinox, is when astronomical fall arrives. This year, it will occur at 8:44 a.m. EDT on Sept. 22, according to the Naval Observatory.
When is the first day of fall? The first day of fall this year, also known as the autumnal equinox is Sunday, Sept. 22. According to the Farmer's Almanac, the exact time of the autumnal equinox in ...
When is the first day of fall? The first day of fall is Sunday, Sept. 22, at 7:44 a.m. CT/ 8:44 a.m. ET, also known as the autumnal equinox. The equinox is known as the astronomical start of the ...
Qiufen. The traditional Chinese lunisolar calendar divides a year into 24 solar terms. [1] Qiūfēn, Shūbun, Chubun, or Thu phân is the 16th solar term. It begins when the Sun reaches the celestial longitude of 180° and ends when it reaches the longitude of 195°. It more often refers in particular to the day when the Sun is exactly at the ...
In 2024, the autumnal equinox falls on Sunday, Sept. 22 at 8:43 a.m. EDT, the earliest start to astronomical fall since 1796, when it occurred on Sept. 22 at 3:27 a.m. LMT. While this equinox ...