Every six months, the equinox splits Earth's day almost in half. Here's how it happens—and why people have celebrated it ...

The autumn equinox is approaching in Australia. From the solar events to the spiritual meaning, here's what you need to know.

Are you ready for fall? The official arrival of fall is the autumnal equinox, which occurs in the Northern Hemisphere on Monday. After a hot summer, the September equinox marks a welcome shift in the ...

ROANOKE, Va. – The astronomical start to Fall occurs next Monday! The sun will be perfectly aligned with the equator at 2:19pm in the afternoon. This will provide near equal times of day and night for ...

Despite the unpredictable weather, spring officially arrives today, marking the vernal equinox – a precise celestial event ...

The Southern Hemisphere’s autumnal equinox will occur later this week, marking the date when day and night are roughly equal ...

Friday brought us what we call “the first day of spring.” But announcing spring is an arbitrary declaration, as we saw by ...