The vernal equinox, marking the first day of spring, occurs on Thursday, March 20, 2025, at 5:01 a.m. ET. An equinox happens when the sun's rays are directly over the equator, resulting in ...

The autumnal equinox marks the official goodbye to summer and the hello to fall. Scientifically, it signals the shift toward shorter days and longer nights as Earth's tilt leans us closer to winter.

The autumnal equinox arrives Monday, marking the start of the fall season for the Northern Hemisphere and the spring in the Southern Hemisphere. On the equator, the sun will be directly overhead at ...

Get ready to embrace the darkness during the longest night of the year ‒ the winter solstice. The solstice occurs at the same time everywhere on Earth, this year it happens Dec. 21 at 4:21 a.m. EST.

It's been nearly a month since the winter solstice and the holiday season, and we're now well into 2025. Despite the influx of winter weather into Texas, the days are growing longer, and many are ...

Sun is setting earlier and leaves are changing. Here's what to know about first day of fall 2025, autumnal equinox, foliage map and winter solstice ...