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Week numbers 2011

Week numbers 2011

2011 has 52 ISO weeks. Each row gives the Monday and the Sunday of the week. Print this page for a plain list of the weeks.

Weeks in 2011
52 weeks
A regular year: it has 52 ISO weeks.
Week 1 starts
Monday, 3 January 2011
the week that contains 4 January
Last week ends
Sunday, 1 January 2012
week 52
1 January 2011
Week 52 of 2010
Weeks 1 and 52 can include days of the neighbouring years: a week belongs to the year that contains its Thursday.

Printable 2011 calendars by countryWith public holidays and week numbers, as a PDF or PNG.

All weeks

The 52 weeks of 2011

  1. Week 1Mon 3 Jan – Sun, 9 Jan 2011
  2. Week 2Mon 10 Jan – Sun, 16 Jan 2011
  3. Week 3Mon 17 Jan – Sun, 23 Jan 2011
  4. Week 4Mon 24 Jan – Sun, 30 Jan 2011
  5. Week 5Mon 31 Jan – Sun, 6 Feb 2011
  6. Week 6Mon 7 Feb – Sun, 13 Feb 2011
  7. Week 7Mon 14 Feb – Sun, 20 Feb 2011
  8. Week 8Mon 21 Feb – Sun, 27 Feb 2011
  9. Week 9Mon 28 Feb – Sun, 6 Mar 2011
  10. Week 10Mon 7 Mar – Sun, 13 Mar 2011
  11. Week 11Mon 14 Mar – Sun, 20 Mar 2011
  12. Week 12Mon 21 Mar – Sun, 27 Mar 2011
  13. Week 13Mon 28 Mar – Sun, 3 Apr 2011
  14. Week 14Mon 4 Apr – Sun, 10 Apr 2011
  15. Week 15Mon 11 Apr – Sun, 17 Apr 2011
  16. Week 16Mon 18 Apr – Sun, 24 Apr 2011
  17. Week 17Mon 25 Apr – Sun, 1 May 2011
  18. Week 18Mon 2 May – Sun, 8 May 2011
  19. Week 19Mon 9 May – Sun, 15 May 2011
  20. Week 20Mon 16 May – Sun, 22 May 2011
  21. Week 21Mon 23 May – Sun, 29 May 2011
  22. Week 22Mon 30 May – Sun, 5 Jun 2011
  23. Week 23Mon 6 Jun – Sun, 12 Jun 2011
  24. Week 24Mon 13 Jun – Sun, 19 Jun 2011
  25. Week 25Mon 20 Jun – Sun, 26 Jun 2011
  26. Week 26Mon 27 Jun – Sun, 3 Jul 2011
  27. Week 27Mon 4 Jul – Sun, 10 Jul 2011
  28. Week 28Mon 11 Jul – Sun, 17 Jul 2011
  29. Week 29Mon 18 Jul – Sun, 24 Jul 2011
  30. Week 30Mon 25 Jul – Sun, 31 Jul 2011
  31. Week 31Mon 1 Aug – Sun, 7 Aug 2011
  32. Week 32Mon 8 Aug – Sun, 14 Aug 2011
  33. Week 33Mon 15 Aug – Sun, 21 Aug 2011
  34. Week 34Mon 22 Aug – Sun, 28 Aug 2011
  35. Week 35Mon 29 Aug – Sun, 4 Sept 2011
  36. Week 36Mon 5 Sept – Sun, 11 Sept 2011
  37. Week 37Mon 12 Sept – Sun, 18 Sept 2011
  38. Week 38Mon 19 Sept – Sun, 25 Sept 2011
  39. Week 39Mon 26 Sept – Sun, 2 Oct 2011
  40. Week 40Mon 3 Oct – Sun, 9 Oct 2011
  41. Week 41Mon 10 Oct – Sun, 16 Oct 2011
  42. Week 42Mon 17 Oct – Sun, 23 Oct 2011
  43. Week 43Mon 24 Oct – Sun, 30 Oct 2011
  44. Week 44Mon 31 Oct – Sun, 6 Nov 2011
  45. Week 45Mon 7 Nov – Sun, 13 Nov 2011
  46. Week 46Mon 14 Nov – Sun, 20 Nov 2011
  47. Week 47Mon 21 Nov – Sun, 27 Nov 2011
  48. Week 48Mon 28 Nov – Sun, 4 Dec 2011
  49. Week 49Mon 5 Dec – Sun, 11 Dec 2011
  50. Week 50Mon 12 Dec – Sun, 18 Dec 2011
  51. Week 51Mon 19 Dec – Sun, 25 Dec 2011
  52. Week 52Mon, 26 Dec 2011 – Sun, 1 Jan 2012

What week is it now?201020122026

How it works

Week number

2011 has 52 ISO weeks. It begins on a Saturday; only years that begin on a Thursday, or on a Wednesday in a leap year, have 53 weeks.

ISO 8601 numbers the weeks of a year from 1 to 52 or 53. Weeks run from Monday to Sunday, and week 1 is the week that holds the first Thursday of the year, which is also the week that contains 4 January. Each week belongs to the year that contains its Thursday.

Questions

Good to know

How many weeks are there in 2011?

2011 has 52 ISO weeks (52 or 53 in any year).

When does week 1 of 2011 start?

Week 1 of 2011 runs Mon 3 Jan – Sun, 9 Jan 2011. It is the week that contains 4 January 2011.

Which years after 2011 have 53 weeks?

2015, 2020, 2026, 2032. A year has 53 ISO weeks when 1 January is a Thursday, or a Wednesday in a leap year.

How do I get a printable list or calendar?

Use the print button above for this list of weeks, or open the printable calendar of your country: it marks the public holidays and shows the ISO week number of every week.