What Time Is The Autumn Equinox 2025. In the northern hemisphere , the autumnal equinox takes place on september 22, 2024, at 12:44 gmt (08:44 a.m. Autumn equinox 2025 (beginning of astronomical autumn) on the day of the autumn (september) equinox, the sun, moving along the ecliptic, crosses the celestial equator, moving from the northern hemisphere to the southern.
The next vernal equinox in the northern hemisphere takes place on march 20,. In different time zones, the date of the equinox may differ by a day, so it is important to indicate your exact location.
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