December 2025 calendar
The days, ISO weeks and bank holidays of December 2025
| Wk | Mon | Tue | Wed | Thu | Fri | Sat | Sun |
|---|---|---|---|---|---|---|---|
| ISO week 49 | 1 | 2 | 3 | 4 | 5 | 6 | 7 |
| ISO week 50 | 8 | 9 | 10 | 11 | 12 | 13 | 14 |
| ISO week 51 | 15 | 16 | 17 | 18 | 19 | 20 | 21 |
| ISO week 52 | 22 | 23 | 24 | 25 — Christmas Day | 26 — Boxing Day | 27 | 28 |
| ISO week 1 | 29 | 30 | 31 | 1 | 2 | 3 | 4 |
- Working days
- 21
- Bank holidays
- Christmas Day, Boxing Day