Summer And Winter Solstice 2025. Type in a year or use the buttons to step forward and backward. Equinox & solstice calculator this page will calculate when the equinoxes and solstices are for a given year.

Fall begins with the autumnal equinox, monday, september 22, 2025, 2:19 p.m. The summer solstice, which occurs around the 21 june in the northern hemisphere, is the day of the year with the longest period of daylight while the winter solstice, on or around the 21.