Summer And Winter Solstice 2024 Usa. The winter solstice marks the year’s longest night and shortest day. Fall begins with the autumnal equinox, sunday, september 22, 2024, 8:44 a.m.
The winter solstice marks the shortest day and longest night of the year. Summer begins with the solstice on thursday, june 20, 2024, marking the astronomical first day of summer in the northern hemisphere.