The vernal equinox arrives on Thursday, March 20, officially marking the beginning of spring in the Northern Hemisphere and autumn in the Southern Hemisphere, reports AP News. What happens during the ...

which is why they are the only times of the year when the Earth’s North and South Poles are simultaneously lit by sunlight. Notably, the length of day and night on the equinox aren’t ...

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