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According to the astronomical definition, fall begins with the autumnal equinox. In the Northern Hemisphere, it's the September equinox; south of the equator, it is the equinox in March. What is an equinox? Equinoxes and solstices in your city
Sep 23, 2024 · In 2024, the autumnal (fall) equinox arrives on Sunday, September 22, marking the official first day of fall. Here's everything you should know about the fall equinox—plus our favorite fall facts, folklore, photos, and more!
Aug 23, 2024 · Autumnal equinox, two moments in the year when the Sun is exactly above the Equator and day and night are of equal length; also, either of the two points in the sky where the ecliptic (the Sun’s annual pathway) and the celestial equator intersect.
- The Editors of Encyclopaedia Britannica
Sep 18, 2017 · The 2024 fall equinox—also called the autumn equinox—takes place on Sunday, September 22, 2024. The fall equinox is not on the same day each year, though it always falls between September...
Sep 22, 2024 · We celebrate the September equinox as the first day of autumn for the Northern Hemisphere, and the first day of spring for the Southern Hemisphere. Watch a video about the September equinox,...
The March and September equinoxes mark the beginning of the spring and autumn seasons on Earth, according to one definition. The equinox in September is the start of fall in the Northern Hemisphere and the beginning of spring south of the equator. Equinox and solstice dates—years 1-2149.
The September equinox is when the Sun crosses the celestial equator southward, marking the end of astronomical summer and the beginning of autumn in the Northern Hemisphere. Learn about the dates, times, constellations, and cultural celebrations of this event.
