📅 Week Number Calculator
ISO week number for Monday, October 12, 2026
Week 42
2026-W42-1
| Week starts (Monday) | Monday, October 12, 2026 |
| Week ends (Sunday) | Sunday, October 18, 2026 |
| ISO week-numbering year | 2026 |
- Day of the year
- 285
- Days left in year
- 80
- US week number (Sun start)
- 42
- ISO weeks in 2026
- 53