When is the first day of spring? So long, winter! The first day of spring is almost upon us, and we’re counting down the days ...

Easter can fall anytime between March 22 and April 5. A late Easter means other holidays will also be later. Ash Wednesday, ...

Equinox is Latin for equal nights ... summer solstice and the Tropic of Capricorn during the winter solstice. The Earth's ...

Easter's date is determined by the spring equinox and lunar cycle, causing it to shift yearly. In 2025, it falls on one of ...

Meanwhile, Earth is also constantly rotating ... if you were to stand directly on the equator at the exact time of an equinox, your shadow would be at its absolute minimum. The sun would also ...

An equinox is a phenomenon that only happens twice a year – once during the spring equinox and once during the autumn equinox ...

The fall equinox comes this Wednesday at 3:21 p.m. ET. The day heralds the start of autumn in the northern hemisphere, which houses about 90% of Earth's population. For the southern hemisphere ...

I pick out North America’s celestial highlights for the week ahead (which also applies to northern hemisphere mid-northern ...

Before an equinox shadows move one way ... Here’s where to go to watch an alignment of Earth and the Sun at sunrise and/or sunset—and peer into ancient cultures that observed the night ...