Each March and September, the point directly beneath the Sun crosses the equator, marking the equinoxes. While equinox comes ...

Is the fall equinox actually the day that day and night are precisely equal? It’s a question that recurs each September, and although the name implies they’re equal, they happen to work out slightly ...

When is the first day of fall in 2025? A carefully worded answer is that on Monday, Sept. 22, at 2:19 p.m. Eastern daylight ...

While equinox does mean equal, it's actually a few days later that we see equal hours of daylight and nightlight in Milwaukee. Here's what to know about equilux.

Thursday is Cleveland's equilux day, marking the balance of daylight and nighttime. After the equilux, Cleveland’s nights will outpace its days until the spring.

The actual date when there are nearly equal parts of day and night happens a few days after the autumnal equinox. This is ...