January 31, 2033 (Monday) to February 6, 2033 (Sunday)
Week 5 of 2033 runs from January 31, 2033 (Monday) to February 6, 2033 (Sunday). This is the 5th week of the year according to the ISO 8601 standard, in which weeks start on Monday.
Jan 31 is a Monday. It is the first day of Week 5 of 2033.
Feb 6 is a Sunday. It is the last day of Week 5 of 2033.
Jan 31 is in Week 5 of 2033 according to ISO 8601.
Feb 6 is in Week 5 of 2033 according to ISO 8601.
Week 5 of 2033 runs from January 31, 2033 to February 6, 2033.
Week 5 of 2033 starts on January 31, 2033, the 31th day of 2033.
Yes, all 7 days of Week 5 of 2033 fall within 2033.
2033 has 52 weeks according to ISO 8601.