Thursday is the first day of spring, or the vernal equinox, in the Northern Hemisphere. During an equinox, the center of the ...

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

Spring officially begins in the Northern Hemisphere on March 20 with the vernal equinox as the entire world experiences an equal amount of daylight and darkness.

The autumnal equinox occurs in September – when the ... of darkness almost everywhere on the planet. Unable to view our graphics? Click here to see them. Day and night aren't exactly 12 ...