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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 ...
The equivalent common language English terms spring equinox and autumn (or fall) equinox are even more ambiguous. [19] [20] [21] It has become increasingly common for people to refer to the September equinox in the southern hemisphere as the Vernal equinox. [22] [23]
The autumn equinox is what officially marks the start of fall. When is the first day of fall in 2024? ... During the autumnal equinox, also referred to as the "September equinox," the Sun crosses ...
Fall equinox 2024 arrives on Sunday, September 22. Find out why the first day of autumn still features a little more daylight than darkness.
September 22, 2023 at 10:09 AM. NEW YORK (AP) — Fall is in the air — officially. The equinox arrives on Saturday, marking the start of the fall season for the Northern Hemisphere.
In astronomy, an equinox is either of two places on the celestial sphere at which the ecliptic intersects the celestial equator. [1] [2] [3] Although there are two such intersections, the equinox associated with the Sun's ascending node is used as the conventional origin of celestial coordinate systems and referred to simply as "the equinox".
The autumnal equinox is scheduled to arrive on Sunday, Sept. 22 at 8:44 a.m. ET, according to the Old Farmer's Almanac. The equinox arrives at the same moment worldwide. When is the first day of ...
The September equinox takes place in this month, and certain observances are organized around it. It is the Autumn equinox in the Northern Hemisphere, and the Vernal equinox in the Southern Hemisphere. The dates can vary from 21 September to 24 September (in UTC).