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Why is winter solstice on 22nd not 21st this year?

Best Answers

An actual year, solstice to solstice, averages 365.242 days rather than 365 days. So after three 365-day calendar years the solstice happens 17+ hours later than it did-- then after the following 366-day year it's almost back where it started. read more

The December Solstice is either on Dec 20, 21, 22 or 23. It is the Winter Solstice in the Northern Hemisphere and the Summer Solstice in the Southern Hemisphere. read more

The winter solstice (or hibernal solstice), also known as midwinter, is an astronomical phenomenon marking the day with the shortest period of daylight and the longest night of the year. In the Northern Hemisphere this is the December solstice and in the Southern Hemisphere this is the June solstice. read more

Further Research

11 Things About the June Solstice
www.timeanddate.com

When is the winter solstice?
www.theguardian.com