Winter Solstice 2025 Date Usa Time. The times correspond to the eastern time (et) time zone and will vary in different states. America the exact moment of the autumnal equinox in 2025 is 22 september, at 20:19:18.

In the northern hemisphere, it occurs when the sun is directly over the tropic of capricorn, which is located at 23.5° south of the equator and runs through. So, what is the winter solstice and why does it happen?