First Day Summer 2024. The first day of summer arrives with the solstice this year on thursday, june 20, 2024 at 4:51 p.m. Fall begins with the autumnal equinox, sunday, september 22, 2024, 8:44 a.m.
Thursday, june 20 is the official first day of northern astronomical summer for 2024 — summer solstice — which is the longest day of the year for this half of the planet. Paris 2024 will host the xxxiii olympic summer games, 26 july to 11 august.
