Weekmark

Calendar week · ISO 8601

Week 43, 2027

Monday 25 October – Sunday 31 October 2027

  1. Mon25Oct
  2. Tue26Oct
  3. Wed27Oct
  4. Thu28Oct
  5. Fri29Oct
  6. Sat30Oct
  7. Sun31Oct
ISO week
2027-W43
Copy as
CW43 (25–31 Oct)
Quarter
Q4 2027
Weeks in 2027
52
US week number
44

Week 43 is also written KW 43 (Kalenderwoche) or CW 43. 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 Oct to Saturday 30 Oct a different number: week 44.