Although temperatures have been dropping for weeks, winter doesn’t officially begin until Saturday. Here’s what to know about ...

Ready for the first day of spring? What we know about the 2025 spring equinox, the autumnal equinox, summer and winter ...

During the Northern Hemisphere’s winter solstice, the upper half of the Earth is tilted away from the sun, creating the shortest day and longest night of the year. The winter solstice falls ...

Thursday, March 20 marked the beginning of spring with the vernal equinox, but what does this really mean? To understand, let ...

As the Northern Hemisphere welcomes spring today, the Southern Hemisphere is marked with the first day of autumn.

The winter solstice came on Monday at 5:02 a.m. ET ... which houses about 90% of Earth's population. For the southern hemisphere, it signifies the opposite: shortening days and the dawning ...

and the shortest day as the winter solstice. But what causes the solstices to happen? The Earth spins on its axis and each complete rotation takes 24 hours, or one day. As it spins, the Earth also ...

The exact moment of the winter solstice varies from year to year due to a slight misalignment between the Gregorian calendar and the actual rate of the Earth’s rotation around the sun.

The difference between an equinox and a solstice is based on Earth’s tilt, affecting daylight length and the changing of ...

The autumnal equinox occurs in September – when the Earth's axis is tilted neither ... March 20, 2025. Teh winter solstice is Sunday, Dec. 21, 2025. Chris Sims is a digital content producer ...

Earth's oceans and atmosphere act like heat ... The Incas of South America celebrated the corresponding winter solstice with a ceremony called Inti Raymi, which included food offerings and ...