Here's when the fall equinox happens and when the United States changes the clocks at the end of daylight saving time.

The winter solstice, marking the longest night and fewest hours of daylight of the year, is upon us. What to know about official first day of winter.

People north of the equator will experience their longest day and shortest night of the year. People south of the equator will see the opposite.

The World Has Never Seen Anything Like What’s Happening at the Equator Right Now Hurricane Florence is really bad. What’s happening at the equator is much worse.

It is an entirely different story at the equator. The length of day and night for any location is constant through the year at about 12 hours. However, daylight at the equator is always a bit ...

The equinox is not when day and night have equal lengths. Instead it’s something more nuanced but no less glorious ...

Discover what longitude and latitude are and understand what the different hemispheres are. Learn how to locate different places in the world.