2031 Week Calendar

All 52 ISO 8601 weeks with Monday-to-Sunday dates

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2031 ISO Week Calendar — All 52 Weeks

The year 2031 has 52 weeks according to the ISO 8601 standard. Below is a complete list of every week with its exact Monday (start) and Sunday (end) dates. Each row links to the full week details page.

Week Monday (Start) Sunday (End)
Week 1 December 30, 2030 January 5, 2031
Week 2 January 6, 2031 January 12, 2031
Week 3 January 13, 2031 January 19, 2031
Week 4 January 20, 2031 January 26, 2031
Week 5 January 27, 2031 February 2, 2031
Week 6 February 3, 2031 February 9, 2031
Week 7 February 10, 2031 February 16, 2031
Week 8 February 17, 2031 February 23, 2031
Week 9 February 24, 2031 March 2, 2031
Week 10 March 3, 2031 March 9, 2031
Week 11 March 10, 2031 March 16, 2031
Week 12 March 17, 2031 March 23, 2031
Week 13 March 24, 2031 March 30, 2031
Week 14 March 31, 2031 April 6, 2031
Week 15 April 7, 2031 April 13, 2031
Week 16 April 14, 2031 April 20, 2031
Week 17 April 21, 2031 April 27, 2031
Week 18 April 28, 2031 May 4, 2031
Week 19 May 5, 2031 May 11, 2031
Week 20 May 12, 2031 May 18, 2031
Week 21 May 19, 2031 May 25, 2031
Week 22 May 26, 2031 June 1, 2031
Week 23 June 2, 2031 June 8, 2031
Week 24 June 9, 2031 June 15, 2031
Week 25 June 16, 2031 June 22, 2031
Week 26 June 23, 2031 June 29, 2031
Week 27 June 30, 2031 July 6, 2031
Week 28 July 7, 2031 July 13, 2031
Week 29 July 14, 2031 July 20, 2031
Week 30 July 21, 2031 July 27, 2031
Week 31 July 28, 2031 August 3, 2031
Week 32 August 4, 2031 August 10, 2031
Week 33 August 11, 2031 August 17, 2031
Week 34 August 18, 2031 August 24, 2031
Week 35 August 25, 2031 August 31, 2031
Week 36 September 1, 2031 September 7, 2031
Week 37 September 8, 2031 September 14, 2031
Week 38 September 15, 2031 September 21, 2031
Week 39 September 22, 2031 September 28, 2031
Week 40 September 29, 2031 October 5, 2031
Week 41 October 6, 2031 October 12, 2031
Week 42 October 13, 2031 October 19, 2031
Week 43 October 20, 2031 October 26, 2031
Week 44 October 27, 2031 November 2, 2031
Week 45 November 3, 2031 November 9, 2031
Week 46 November 10, 2031 November 16, 2031
Week 47 November 17, 2031 November 23, 2031
Week 48 November 24, 2031 November 30, 2031
Week 49 December 1, 2031 December 7, 2031
Week 50 December 8, 2031 December 14, 2031
Week 51 December 15, 2031 December 21, 2031
Week 52 December 22, 2031 December 28, 2031
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❓ Related questions about 2031

What is the week number for January 1, 2031?

January 1, 2031 is in Week 1 of 2031. The ISO week number for Jan 1 depends on which day of the week Jan 1 falls on.

What is the week number for December 31, 2031?

December 31, 2031 is in Week 1 of 2032.

Is 2031 a leap year?

2031 is not a leap year and has 365 days.

❓ Frequently asked questions about 2031

How many weeks are in 2031?

2031 has 52 weeks according to ISO 8601. This is the standard 52-week year length.

What is Week 1 of 2031?

When does Week 1 of 2031 start?

Week 1 of 2031 starts on December 30, 2030 and ends on January 5, 2031.

How is the week number determined for 2031?

ISO 8601 week numbers are determined by the year that contains Thursday. Week 1 of 2031 is the week containing January 4, 2031. Each subsequent week is numbered sequentially.