WeekmarkCalendar week · ISO 8601
Week 52, 2028
Monday 25 December – Sunday 31 December 2028
- Mon25Dec
- Tue26Dec
- Wed27Dec
- Thu28Dec
- Fri29Dec
- Sat30Dec
- Sun31Dec
- ISO week
2028-W52- Copy as
CW52 (25–31 Dec)- Quarter
- Q4 2028
- Weeks in 2028
- 52
- US week number
- 53
Week 52 is also written KW 52 (Kalenderwoche) or CW 52. ISO weeks start on Monday, and week 1 is the week with the year’s first Thursday. US calendars start weeks on Sunday and count the week with 1 January as week 1, so they give Monday 25 Dec to Saturday 30 Dec a different number: week 53.