Below is a comprehensive list of holidays and observances for December 2025. Use this information to plan your month, schedule events, and stay informed about important dates.
| Date | Holiday / Observance |
|---|---|
| December 7, 2025 | Second Sunday in Advent |
| December 8, 2025 | Immaculate Conception |
| December 14, 2025 | Third Sunday in Advent |
| December 21, 2025 | Winter Solstice / Winter (UTC) |
| December 25, 2025 | Western Christmas |
| December 26, 2025 | Boxing Day / Saint Stephen's Day |
| December 31, 2025 | Western New Year's Eve |