Week 01
Worldhttps://www.tuxxinfo.com/planning/week-numbers/1/ monday 29 december - sunday 4 january 2026
Week number 1 in more years
- 2025: monday 30 december - sunday 5 january
- 2026: monday 29 december - sunday 4 january
- 2027: monday 4 - sunday 10 january
- 2028: monday 3 - sunday 9 january
International holidays in week 1
| dec. 31 | New Year's Eve |
| jan. 1 | Day of Establishment |
| jan. 1 | New Year |
| jan. 1 | Solemnity of Mary, Mother of God |
| jan. 2 | 2nd January |