Forbes contributors publish independent expert analyses and insights. An award-winning reporter writing about stargazing and the night sky. What day is the first day of spring 2026? Friday, March 20, ...

The 2026 autumnal equinox falls on Tuesday, Sept 22. On the day of an equinox, the Earth’s axis isn’t tilted. Because of this, all latitudes experience fairly equal amounts of daylight and darkness, ...

Add Yahoo as a preferred source to see more of our stories on Google. It's been a long winter, but spring is close. On Friday, the vernal equinox arrived, signaling the astronomical start of spring ...

September's (sporadic) sweater weather chill and the changing leaf colors are a sign that the first day of fall is near. Here's what to know about the autumnal equinox and fall foliage forecast map ...

December's winter solstice occurs when the sun reaches its southernmost point in the sky. With it, comes the shortest day of the year and the longest night in the northern hemisphere. It also marks ...

The equinox marks the arrival of fall in the Northern Hemisphere on Sept. 22.

Day and night will get equal time for a brief moment Monday as much of the world heads into fall. The autumnal equinox arrives Monday, marking the start of the fall season for the Northern Hemisphere ...

While blisteringly cold weather arrived early for many people in the US, it’s now officially winter. The winter solstice is Sunday, and Earth’s shortest, darkest day is here. The winter solstice has a ...