Weekmark

Calendar week · ISO 8601

Week 13, 2028

Monday 27 March – Sunday 2 April 2028

  1. Mon27Mar
  2. Tue28Mar
  3. Wed29Mar
  4. Thu30Mar
  5. Fri31Mar
  6. Sat1Apr
  7. Sun2Apr
ISO week
2028-W13
Copy as
CW13 (27 Mar – 2 Apr)
Quarter
Q1 2028
Weeks in 2028
52
US week number
14

Week 13 is also written KW 13 (Kalenderwoche) or CW 13. 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 27 Mar to Saturday 1 Apr a different number: week 14.