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December 31 on Social Media

December 31 Summary

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December 31 also known as 31 December   31st of December   Dec 31   December 31st  

December 31 is the 365th day of the year (366th in leap years) in the Gregorian calendar. It is known by a collection of names including: Saint Sylvester's Day, New Year's Eve or Old Years Day/Night, as the following day is New Year's Day. It is the last day of the year. The following day is January 1 of the following year.

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