Dates can shift slightly for equinoxes depending on the year, but it's always around this time in September. The next vernal equinox in the Northern Hemisphere takes place on March 20, 2026, and will ...

Peak sunshine has arrived in the Northern Hemisphere — the summer solstice. Friday is the longest day of the year north of the equator, where the solstice marks the start of astronomical summer. It’s ...

This year's Autumnal Equinox falls on September 22, 2022. But what does that mean exactly? The Earth rotates on its axis once every 24 hours and revolves around the sun once every 365 days. And ...

September: Florida is another area where temperatures are uncertain. Above-normal temperatures favored for the first half of ...

A NASA and NOAA weather satellite captured this image of an autumnal equinox in 2019. Are you ready for fall? The official arrival of fall is the autumnal equinox, which occurs in the Northern ...

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 ...

Freelance writer Amanda C. Kooser covers gadgets and tech news with a twist for CNET. When not wallowing in weird gear and iPad apps for cats, she can be found tinkering with her 1956 DeSoto. Are you ...