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Facts about December 21, 2026

Monday, December 21, 2026 is the target date. December 21, 2026 is a weekday in the fourth quarter and in meteorological winter.

December 21, 2026 is day 355 of 365 and ISO week 52 of 2026. 10 days remain in December after December 21, 2026, and 10 days remain in 2026.

Monday, December 21, 2026 is not a US federal holiday. The next one is Christmas Day on Friday, December 25, 2026, 4 days later.