2021年12月21日 · Winter solstice 2021 will be on December 21. Find out why the Northern Hemisphere has its shortest day at this time and how people have celebrated for thousands of years.

2025年1月2日 · When is the winter solstice? In 2025, the first day of winter is Saturday, December 21. So, what is the winter solstice and why does it happen? Learn all about the shortest day of the year—and tell us what winter means to you!

6 天之前 · Winter 2021 starts on Tuesday, December 21st in the Northern Hemisphere, with the first day of winter being the shortest daylight day of the year with the earth's axis having reached its furthest tilt away from the sun and begins to change directiion back.

The winter solstice occurs during the hemisphere's winter. In the Northern Hemisphere, this is the December solstice (December 21 or 22) and in the Southern Hemisphere, this is the June solstice (June 20 or 21). Although the winter solstice itself lasts only a moment, the term also refers to the day on which it occurs.

2021年9月17日 · The first day of winter is December 21, 2021. Winter will come to the Northern Hemisphere on December 21 at 10:59 a.m. EST, per the Farmers' Almanac . That means it will take place at 7:59 a.m. PST, 8:59 a.m. MT, and 9:59 a.m. CST.

2021年12月21日 · The 2021 winter solstice occurred at 10:59 a.m. ET/7:59 a.m. PT on Tuesday, Dec. 21, marking the official start of the astronomical winter and the shortest day of the year for the Northern...

2021年12月20日 · The winter solstice, which marks the astronomical first day of winter in the Northern Hemisphere and the shortest day of the year, happens on Dec. 21, 2021. Here’s everything you need to...

2021年12月21日 · Tuesday is the first official day of winter, with the winter solstice taking place at 10:59 a.m. The first day of winter is also the day with the fewest hours of sunlight, or the shortest day of...

Dec. 21 marks the winter solstice, which means the Earth's Northern Hemisphere is tilted as far away from the sun as possible, and that half of the planet will see the shortest hours of...

2021年12月20日 · Winter will officially arrive Tuesday morning, Dec. 21, 2021. Winter’s precise arrival — at 10:59 a.m. Eastern time — is technically known as the winter solstice and will make Tuesday the...