Week numbers 2031

2031 has 52 weeks. Week 1 starts on Monday, 30 December 2030 and week 52 ends on Sunday, 28 December 2031.

All week numbers of 2031 in one list, with the start and end date of every week.

All weeks of 2031

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Week numbers 2031 (ISO-8601)
WeekStart dateEnd date
1Wednesday, 1 January 2031Sunday, 5 January 2031
2Monday, 6 January 2031Sunday, 12 January 2031
3Monday, 13 January 2031Sunday, 19 January 2031
4Monday, 20 January 2031Sunday, 26 January 2031
5Monday, 27 January 2031Sunday, 2 February 2031
6Monday, 3 February 2031Sunday, 9 February 2031
7Monday, 10 February 2031Sunday, 16 February 2031
8Monday, 17 February 2031Sunday, 23 February 2031
9Monday, 24 February 2031Sunday, 2 March 2031
10Monday, 3 March 2031Sunday, 9 March 2031
11Monday, 10 March 2031Sunday, 16 March 2031
12Monday, 17 March 2031Sunday, 23 March 2031
13Monday, 24 March 2031Sunday, 30 March 2031
14Monday, 31 March 2031Sunday, 6 April 2031
15Monday, 7 April 2031Sunday, 13 April 2031
16Monday, 14 April 2031Sunday, 20 April 2031
17Monday, 21 April 2031Sunday, 27 April 2031
18Monday, 28 April 2031Sunday, 4 May 2031
19Monday, 5 May 2031Sunday, 11 May 2031
20Monday, 12 May 2031Sunday, 18 May 2031
21Monday, 19 May 2031Sunday, 25 May 2031
22Monday, 26 May 2031Sunday, 1 June 2031
23Monday, 2 June 2031Sunday, 8 June 2031
24Monday, 9 June 2031Sunday, 15 June 2031
25Monday, 16 June 2031Sunday, 22 June 2031
26Monday, 23 June 2031Sunday, 29 June 2031
27Monday, 30 June 2031Sunday, 6 July 2031
28Monday, 7 July 2031Sunday, 13 July 2031
29Monday, 14 July 2031Sunday, 20 July 2031
30Monday, 21 July 2031Sunday, 27 July 2031
31Monday, 28 July 2031Sunday, 3 August 2031
32Monday, 4 August 2031Sunday, 10 August 2031
33Monday, 11 August 2031Sunday, 17 August 2031
34Monday, 18 August 2031Sunday, 24 August 2031
35Monday, 25 August 2031Sunday, 31 August 2031
36Monday, 1 September 2031Sunday, 7 September 2031
37Monday, 8 September 2031Sunday, 14 September 2031
38Monday, 15 September 2031Sunday, 21 September 2031
39Monday, 22 September 2031Sunday, 28 September 2031
40Monday, 29 September 2031Sunday, 5 October 2031
41Monday, 6 October 2031Sunday, 12 October 2031
42Monday, 13 October 2031Sunday, 19 October 2031
43Monday, 20 October 2031Sunday, 26 October 2031
44Monday, 27 October 2031Sunday, 2 November 2031
45Monday, 3 November 2031Sunday, 9 November 2031
46Monday, 10 November 2031Sunday, 16 November 2031
47Monday, 17 November 2031Sunday, 23 November 2031
48Monday, 24 November 2031Sunday, 30 November 2031
49Monday, 1 December 2031Sunday, 7 December 2031
50Monday, 8 December 2031Sunday, 14 December 2031
51Monday, 15 December 2031Sunday, 21 December 2031
52Monday, 22 December 2031Sunday, 28 December 2031
1Monday, 29 December 2031Wednesday, 31 December 2031

The first and last row of a year overview can be shorter than seven days.

Week numbers according to the international standard. Source: ISO 8601. More about our sources

How do week numbers work?

Most of the world uses the ISO-8601 standard: weeks start on Monday and week 1 is the week with the first Thursday of the year. A year can therefore start in week 52 or 53 of the previous year.

Week numbers in 2031 explained

2031 has 52 weeks. The year starts on a Wednesday; only years that start on a Thursday, or leap years that start on a Wednesday, get a week 53. The next year with 53 weeks is 2032.

Week 1 of 2031 already starts on Monday, 30 December 2030. The last days of December therefore belong to the new year: if you note a week number on those days, it's week 1.

The last week of the year, week 52, ends on Sunday, 28 December 2031. Then week 1 of 2032 begins, a year with 53 weeks.

Using the 2031 week numbers

The table above shows the Monday each week starts on and the Sunday it ends on. That makes it easy to find the dates that go with a week number, for a delivery, a project milestone or a week of annual leave.

You can print all week numbers of 2031 or download them as an Excel or PDF file.

Frequently asked questions

How many weeks are there in 2031?

2031 has 52 weeks under ISO-8601 week numbering.

When does week 1 of 2031 start?

Week 1 of 2031 starts on Monday, 30 December 2030.

Can I download the 2031 week numbers?

Yes, use the buttons next to the table: print, Excel or PDF.

Is 1 January 2031 in week 1?

Yes. Week 1 of 2031 starts on Monday, 30 December 2030, so 1 January belongs to week 1.

How many weeks are there in 2032?

2032 has 53 weeks.

See also

In other countries