What Is The First Day Of Fall 2024. Learn more about the autumnal equinox, the. Find out the exact time, the full moon, the aurora borealis.
Learn what an equinox is, how it affects the seasons and daylight hours, and how to celebrate the. โ the first day of winter in the northern hemisphere is marked by the winter solstice, which is expected to arrive at 3:19 a.m.