Monthly calendar

Week numbers in January 2026

January has 31 days. It starts on Thursday and ends on Saturday.

WkMonTueWedThuFriSatSun

1 29 30 31 1 2 3 4

2 5 6 7 8 9 10 11

3 12 13 14 15 16 17 18

4 19 20 21 22 23 24 25

5 26 27 28 29 30 31 1

ISO weeks touching January 2026

Week 1December 29, 2025 – January 4, 2026 Week 2January 5–11, 2026 Week 3January 12–18, 2026 Week 4January 19–25, 2026 Week 5January 26 – February 1, 2026