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

The vernal equinox arrives on Thursday, marking the start of the spring season for the Northern Hemisphere and the fall in the Southern Hemisphere. On the equator, the sun will be directly overhead at ...

Thursday is the first day of spring, or the vernal equinox, in the Northern Hemisphere. During an equinox, the center of the sun is on the same plane as the equator. After the vernal equinox in March, ...

The shortest day of the year is the winter solstice. A solstice is the moment the Earth's tilt toward or away from the sun is at a maximum, according to the National Weather Service.

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

on the summer solstice. This provides the most direct solar radiation of the year, resulting in more heating of the Earth’s surface and, therefore, warmer temperatures. In the winter ...

This solstice falls between June 20 and 22. This image provided by NOAA on March 19, 2025 shows Earth. (NOAA via AP) Meanwhile, at the winter solstice, the Northern Hemisphere is leaning away from ...

The winter solstice falls between December 20 and 23. These are just two different ways to carve up the year. While astronomical seasons depend on how the Earth moves around the sun ...