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When is the September equinox?
When is the autumnal equinox?
Why do we celebrate the September equinox?
When is the equinox in the northern hemisphere?
When is the September 21 equinox?
When do equinoxes fall?
Learn about the September equinox, when the Sun crosses the celestial equator from north to south, and the reasons for the date variations. Find out how the equinox affects day and night length, seasons, and the calendar around the world.
Learn about the astronomical event of the Sun crossing the celestial equator southward, marking the start of autumn in the Northern Hemisphere and spring in the Southern Hemisphere. Find out the dates and times of the September equinoxes from 2018 to 2028, and the cultural and historical significance of this day.
Learn about the seasonal milestone of the September equinox, when the sun crosses the celestial equator and days and nights are approximately equal worldwide. Find out how to observe the equinox, its signs in nature, and the planets and stars near Fomalhaut.
Learn about the equinox and solstice, the transitions between the seasons of the astronomical calendar. Find out when the autumn equinox occurs in the Northern Hemisphere and how it affects the length of day and night.
The autumnal equinox marks the end of summer and beginning of autumn in the northern hemisphere. Learn when it occurs, how it affects the seasons and the moon, and what traditions and rituals are associated with it.
On September 22, 2024, the day and night are almost equal in most locations. Here are 10 facts about the first day of astronomical fall (autumn) in the Northern Hemisphere. September is North's fall equinox. ©iStockphoto.com/Givaga.
Sep 6, 2024 · Normally, the autumn equinox falls between 22 and 24 September, and this year the equinox occurs on 22 September at 13:44 BST.
