When is the Winter Solstice? Date: December 21 to 23
Winter Solstice Date 2021 - December 21st
When is the Winter Solstice this year? In China, the 2021 Winter Solstice is on December 21. There is no holiday for this festival.
When does the Winter Solstice start?
What time is the Winter Solstice? In China, the 2021 Winter Solstice is at 23:59:09 on December 21. In 2022, it is at 05:48:01 on December 22.
In UK, the 2021 Winter Solstice is at 15:59:09 on December 21, Universal Time. It occurs in the United States at 10:59:09 on December 21, Eastern Standard Time.
Winter Solstice Dates change between December 21st and 23rd.
Why? The reason is that Winter Solstice is when the daytime is the shortest of the year and when the sun shines directly with 90 degrees on Tropic of Cancer. It takes every 365.24219 days for this happening, which is the time for one earth revolution. But there are 365 days or 366 days in a year which is longer or shorter than the actual time for one earth revolution. Thus, the date of Winter Solstice changes.
See also What is Winter Solstice? - The Shortest Day of the Year
As a traditional Chinese festival, why do Winter Solstice dates only change between December 21st and 23rd in Gregorian calendar, not like Chinese New Year dates change greatly between late January and late February, Mid-Autumn Festival dates change between early September and early October. This is because Winter Solstice was found by ancient Chinese in accordance with the “move of the Sun” and current Gregorian calendar is also a kind of solar calendar, while most Chinese traditional festival dates are in accordance with lunar calendar.
Calendar of Winter Solstice Day (2000 – 2050)
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