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, ...

What is the autumnal equinox? The autumnal equinox marks the start of autumn in the Northern Hemisphere. The Earth travels around the sun at an angle, and for most of the year, the Earth’s axis is ...

Fall foliage at sunrise on the Blue Ridge Parkway near Asheville, North Carolina. The September Equinox 2025 arrives Sept. 22 at 2:19 p.m. EDT, marking autumn in the north and spring in the south.

Sunday is the longest day of the year in the Northern Hemisphere. It’s the opposite in the Southern Hemisphere, where it is ...

This is read by an automated voice. Please report any issues or inconsistencies here. Day and night will get equal time for a brief moment as much of the world heads into fall. The autumnal equinox ...

The longest day of the year has nearly arrived. In the northern Hemisphere, Sunday marks the summer solstice, the start of ...

Monday, Sept. 22 is what many consider the first official day of fall: The fall equinox. The equinox marks the moment when the Sun crosses the equator, marking the start of autumn in the Northern ...

(CNN) — Twice a year, the sun doesn’t play favorites. Everyone on Earth is seemingly on equal status – at least when it comes to the amount of light and dark that they get. On Monday, we enter our ...

Explainer: Why does it take so long for the days to get lighter after winter solstice? Look to the stars for the answers.

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 ...

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 ...