September equinox - Wikipedia
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.
10 Facts About the September Equinox - timeanddate.com
September is North's fall equinox. ©iStockphoto.com/Givaga. 1. Second Equinox of the Year. The September equinox is on or around September 22, while the first equinox of the year, the March Equinox, takes place on or around March 21 every year. 2. Say Goodbye to Summer... ...in the Northern Hemisphere.
September Equinox: When and What Is It? - timeanddate.com
The September equinox is the moment the Sun crosses the celestial equator —an imaginary line in the sky above Earth’s equator — from north to south. This happens on September 22, 23, or 24 in most years. 10 facts about the September equinox.
2025 September equinox: All you need to know - EarthSky
The September equinox is a seasonal milestone in Earth’s yearly orbit around the sun. At an equinox, the sun appears directly above Earth’s equator. At the September equinox, the sun is...
When is the First Day of Fall? Autumnal Equinox 2024
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!
Fall Equinox 2024 ‑ Date, Rituals & Meaning | HISTORY
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 21 ...
Fall equinox 2024: When it is, why it happens and what to look for
Sep 15, 2024 · While meteorologists like to call fall at the beginning of September, astronomical autumn starts later, on the autumnal equinox. This year, it falls on Sunday, Sept. 22 at 8:44 a.m. EDT...
What Is the Equinox? And What Is the Solstice? - timeanddate.com
The September equinox occurs sometime between September 21 and 24. In the Northern Hemisphere, the March equinox is also known as the spring or vernal equinox; the September equinox can be called the fall or autumnal equinox. In the Southern Hemisphere, the names are the other way around.
Equinox – Definition, Facts, Dates - Science Notes and Projects
Sep 4, 2024 · Key Points. Definition and Occurrence: An equinox occurs twice a year, around March 20 and September 23, when the Earth’s equator passes directly under the Sun. Day and Night Length: While day and night are very nearly equal, daytime is slightly longer than nighttime at …
September Equinox | Night Sky Network
Sep 22, 2021 · September Equinox occurs this year on September 22, at 19:21 UTC (or 3:21 pm EDT/ 12:21 pmPDT). Equinox is the moment when the Sun shines directly on the Earth's equator and lights up the Northern and Southern Hemispheres equally.