Summer Solstice 2025 Date Us. which state has the longest d the date of the summer solstice marks the. Summer 2025 starts on friday, june 20th in the northern hemisphere, with the first day of summer being the longest daylight day of the year with the earth's axis having.
The summer solstice date varies due to earth’s elliptical orbit, axial tilt, and the discrepancy between the calendar year and the time for a complete orbit. Fall begins on september 22 or 23 and ends on december 21 or 22.