Winter Solstice 2025 Dates Usa. Winter solstice 2025 (beginning of astronomical winter) on the day of the winter (december) solstice, the sun passes through the southernmost point of the ecliptic, that is, as far as possible from the celestial equator to the south (for the northern hemisphere of the earth). Here are the equinox and solstice dates—plus, answers to common questions about the seasons of the year in north america.
Here are the equinox and solstice dates—plus, answers to common questions about the seasons of the year in north america. The winter solstice marks the shortest day and longest night of the year.