Winter 2025 Start Date

Winter 2025 Start Date. Here are the equinox and solstice dates—plus, answers to common questions about the seasons of the. Find key dates and deadlines within sait's academic calendar year.

Last day to add or swap winter 2025 undergraduate classes (other than engineering classes or architectural science collaborative exercise classes offered in ers sessions). For the year 2023 the meteorological winter will begin on friday, december 1, 2023 and will end on thursday, february 29, 2024.