Calendar week · ISO 8601
Week 49, 2028
Monday 4 December – Sunday 10 December 2028
- Mon4Dec
- Tue5Dec
- Wed6Dec
- Thu7Dec
- Fri8Dec
- Sat9Dec
- Sun10Dec
- ISO week
2028-W49- Copy as
CW49 (4–10 Dec)- Quarter
- Q4 2028
- Weeks in 2028
- 52
- US week number
- 50
Week 49 is also written KW 49 (Kalenderwoche) or CW 49. 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 4 Dec to Saturday 9 Dec a different number: week 50.