When Is The First Day Of Fall 2025 Usa 2025. Shortest day america (2025 year) 21 december (7 hours 50 mins 1 sec) Starts on september 22, 2025, at 8:44 am and lasts until december 21, 2025, at 4:21 am (93 days) winter:
Dates and times are represented in universal time (utc). Spring 2025 starts on thursday, march 20th in the northern hemisphere, with daylight time lengthening and the leaves begining show on the trees with the changing tilt of.