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Monthly calendar

Week numbers in December 2025

December has 31 days. It starts on Monday and ends on Wednesday.

← NovemberJanuary →
December 2025
WkMonTueWedThuFriSatSun
491234567
50891011121314
5115161718192021
5222232425262728
12930311234

ISO weeks touching December 2025

Week 49December 1–7, 2025Week 50December 8–14, 2025Week 51December 15–21, 2025Week 52December 22–28, 2025Week 1December 29, 2025 – January 4, 2026