Search results
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. Autumn Equinox, Northern Hemisphere (September) North America, Europe, most of Asia, Northern Africa.
An equinox is when the Sun crosses the Earth's equator and day and night are of equal length. The autumnal equinox is around 23 September in the Northern Hemisphere and marks the start of autumn.
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.
15 wrz 2024 · The fall equinox is an important way to mark Earth's annual journey around the sun. The hours of darkness will gradually increase north of the equator until the solstice on Dec. 21, and vice...
23 wrz 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!
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.
18 wrz 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...
