For much of the planet, the 2025 fall equinox occurs this Monday when day and night are supposed to be of “equal lengths,” ...

There’s a good explanation for why you don’t get precisely 12 hours of daylight on the equinox. More on that farther down. For people in places such as Montreal and Richmond, Virginia, that’s 2:19 p.m ...

From cooler temps to fall foliage, there's plenty to be excited about for the start of fall — but what does the autumnal ...

Madison actually comes closest to day-night parity on Thursday, when there will be 12 hours and 14 seconds between sunrise at ...

CHICAGO, USA - SEPTEMBER 22: A view of the Chicago's western streets Kinzie and Madison as the sun rises and falls straight down one of two days a year which is known as "Chicagohenge" in Chicago, ...

The autumnal equinox arrives on Monday, September 22, 2025, at 2:19 P.M. EDT, bringing with it the end of summer, the ...

There are two equinoxes and two solstices every year. Daylight on Sept. 22, 2025, will last roughly the same length of time ...

Astronomical spring officially begins overnight Wednesday. At exactly 2:01 a.m. Pacific Time, Earth's axis will be perfectly vertical and the sun's most direct energy will be pointed right at the ...