Date Of Solstice 2024. 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 universal time (4:50 p.m. Uring the solstice, the sun reaches its highest or lowest point in the sky at noon, resulting in the longest day (summer solstice) or the longest night (winter sun'sice) of the year.
Summer solstice generally occurs between june 20 and june 22. In 2024, the summer solstice will occur on june 20, at 20:51 gmt in the northern hemisphere, and on december 21, at 09:20 gmt in the southern hemisphere.