When Does Winter Technically Start __full__ Today

(Note: In the Southern Hemisphere, these dates mark the start of Summer.)

Long ago, the transition into winter was a simple observation of the world's deep chill. But over time, two distinct groups—the sky-watchers and the record-keepers—developed their own "official" start dates. when does winter technically start

Here is the guide to both.

This year, it officially begins in the Northern Hemisphere on Monday, December 21, 2026, at 3:50 P.M. EST . This date is marked by the winter solstice , which is the shortest day of the year. (Note: In the Southern Hemisphere, these dates mark

While the "first day of winter" printed on most calendars refers to the solstice, scientists and weather experts often use a more consistent system. 1. Astronomical Winter (The Solstice) (Note: In the Southern Hemisphere