January 26, 2026 (Monday) to February 1, 2026 (Sunday)
Week 5 of 2026 runs from January 26, 2026 (Monday) to February 1, 2026 (Sunday). This is the 5th week of the year according to the ISO 8601 standard, in which weeks start on Monday.
Jan 26 is a Monday. It is the first day of Week 5 of 2026.
Feb 1 is a Sunday. It is the last day of Week 5 of 2026.
Jan 26 is in Week 5 of 2026 according to ISO 8601.
Feb 1 is in Week 5 of 2026 according to ISO 8601.
Week 5 of 2026 runs from January 26, 2026 to February 1, 2026.
Week 5 of 2026 starts on January 26, 2026, the 26th day of 2026.
Yes, all 7 days of Week 5 of 2026 fall within 2026.
2026 has 53 weeks according to ISO 8601.