2026-W01
Calendar week 1/2026
ISO week 2026-W01 runs from 29 December 2025 to 4 January 2026.
- Monday29 December 2025
- Tuesday30 December 2025
- Wednesday31 December 2025
- Thursday1 January 2026
- Friday2 January 2026
- Saturday3 January 2026
- Sunday4 January 2026