Date Of Solstice 2024. The winter solstice marks the official start of the astronomical winter, as the sun reaches its most southerly point in the sky as seen from earth. 20 and 23, depending on the year, but the 21st and 22nd are the most common.

As the year draws to a. The winter solstice marks the official start of the astronomical winter, as the sun reaches its most southerly point in the sky as seen from earth.