Are you ready for fall? The official arrival of fall is the autumnal equinox, which occurs in the Northern Hemisphere on Monday. After a hot summer, the September equinox marks a welcome shift in the ...

Add Yahoo as a preferred source to see more of our stories on Google. You might hear the term "autumn equinox" tossed around Sept. 22 on the first day of fall. But what exactly does that mean? Is it ...

This year's autumnal equinox arrives on Sept. 22, marking the first day of fall in the northern hemisphere As summertime comes to a close, the autumnal equinox reminds us that every ending is also the ...

ORLANDO, Fla. – Spring has officially arrived! The vernal equinox arrived on March 20, marking the start of the season for the Northern Hemisphere. But what does that really mean? Let’s break it down.

Astronomically, an equinox occurs when the sun is directly above the equator. The term combines the Latin words aequi, meaning “equal,” and nox, meaning “night,” and corresponds to the two days of the ...

Spring has officially arrived. In 2026, the spring equinox, also known as the vernal equinox, will take place on Friday, March 20, at 7:46 a.m. Eastern time. On the equinox, day and night last almost ...

You might hear the term "autumn equinox" tossed around Sept. 22 on the first day of fall. But what exactly does that mean? Is it different from a solstice? Yes, actually. They mark seasonal changes ...

The Earth’s equator is aligned directly with the Sun on the vernal equinox. @NOAASatellitePA / X Astronomically, an equinox occurs when the sun is directly above the equator. The term combines the ...