First Day Of Winter 2024 Usa Map. Here are the equinox and solstice dates—plus, answers to common questions about the. So, what is the winter solstice, and why does it happen?

It marks the northern hemisphere’s shortest day (first day of winter) and southern hemisphere’s longest day (first day of summer). Winter solstice takes place on december 21, 2024, in the northern hemisphere and on june 20, 2024, in the southern hemisphere.