First Day Of Summer 2025 Calendar Date Usa. Summer begins with the summer solstice, friday, june 20, 2025, 10:42 p.m. Online calendar of holidays and days off in united states for the summer of 2025.

This year the summer will start on thursday june 20, 2024 (day of the summer solstice) and will end on sunday september 22, 2024 with the autumnal equinox. Public holidays for united states in 2025.