Solstice 2024 Dates. The equinox is the time of year when the sun is at its zenith at the earth's equator, and the earth is at right angles (taking the poles) to the sun's rays. Here's everything you need to know about the northern hemisphere's longest day of the year.
The next solstice will occur on june 20, 2024, at 20:51 gmt (4:51 p.m. Solstice—the longest day of the year in the northern hemisphere and the shortest in the southern hemisphere—will occur on thursday, june 20, at 20:50.