First Day Of Winter 2025 Usa Date. The first day of winter (winter solstice or december solstice) is when the sun is in its most southern position directly over the tropic of capricorn. View here the holidays in the united states in 2025, including 2025 holidays and also every other holiday in the usa.

[1] january 20th is inauguration day. Daylight saving time is set to begin on sunday, march 9, 2025.