9 Months Before September 21
9 months before September 21
December 21
Day of week
Mondayin 2026
Day of year
#355
Season
Winter
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Holidays & observances around December 21
cultural
Winter Solstice (around Dec 21–22)
The shortest day of the year in the Northern Hemisphere.
4 days after
Christmas Day
Christian holiday celebrating the birth of Jesus Christ, widely observed worldwide.
5 days after
Boxing Day (UK, Canada, Australia)
A day of giving and sales, public holiday in several countries.
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Everything about December 21
Zodiac sign, famous births, historical events and more
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