Week numbers 2

2 has 52 ISO weeks. Week 1: Dec 31, 1 – Jan 6, 2 · Week 52: Dec 23 – 29

2 at a glance

Weeks in 252
Week 1December 31, 1 – January 6, 2
Week 52December 23, 2 – December 29, 2
Days in 2365
Leap yearNo

All Weeks in 2

Week From To Month
Week 1 in 2 December 31, 1 January 6, 2 December / January
Week 2 in 2 January 7, 2 January 13, 2 January
Week 3 in 2 January 14, 2 January 20, 2 January
Week 4 in 2 January 21, 2 January 27, 2 January
Week 5 in 2 January 28, 2 February 3, 2 January / February
Week 6 in 2 February 4, 2 February 10, 2 February
Week 7 in 2 February 11, 2 February 17, 2 February
Week 8 in 2 February 18, 2 February 24, 2 February
Week 9 in 2 February 25, 2 March 3, 2 February / March
Week 10 in 2 March 4, 2 March 10, 2 March
Week 11 in 2 March 11, 2 March 17, 2 March
Week 12 in 2 March 18, 2 March 24, 2 March
Week 13 in 2 March 25, 2 March 31, 2 March
Week 14 in 2 April 1, 2 April 7, 2 April
Week 15 in 2 April 8, 2 April 14, 2 April
Week 16 in 2 April 15, 2 April 21, 2 April
Week 17 in 2 April 22, 2 April 28, 2 April
Week 18 in 2 April 29, 2 May 5, 2 April / May
Week 19 in 2 May 6, 2 May 12, 2 May
Week 20 in 2 May 13, 2 May 19, 2 May
Week 21 in 2 May 20, 2 May 26, 2 May
Week 22 in 2 May 27, 2 June 2, 2 May / June
Week 23 in 2 June 3, 2 June 9, 2 June
Week 24 in 2 June 10, 2 June 16, 2 June
Week 25 in 2 June 17, 2 June 23, 2 June
Week 26 in 2 June 24, 2 June 30, 2 June
Week 27 in 2 July 1, 2 July 7, 2 July
Week 28 in 2 July 8, 2 July 14, 2 July
Week 29 in 2 July 15, 2 July 21, 2 July
Week 30 in 2 July 22, 2 July 28, 2 July
Week 31 in 2 July 29, 2 August 4, 2 July / August
Week 32 in 2 August 5, 2 August 11, 2 August
Week 33 in 2 August 12, 2 August 18, 2 August
Week 34 in 2 August 19, 2 August 25, 2 August
Week 35 in 2 August 26, 2 September 1, 2 August / September
Week 36 in 2 September 2, 2 September 8, 2 September
Week 37 in 2 September 9, 2 September 15, 2 September
Week 38 in 2 September 16, 2 September 22, 2 September
Week 39 in 2 September 23, 2 September 29, 2 September
Week 40 in 2 September 30, 2 October 6, 2 September / October
Week 41 in 2 October 7, 2 October 13, 2 October
Week 42 in 2 October 14, 2 October 20, 2 October
Week 43 in 2 October 21, 2 October 27, 2 October
Week 44 in 2 October 28, 2 November 3, 2 October / November
Week 45 in 2 November 4, 2 November 10, 2 November
Week 46 in 2 November 11, 2 November 17, 2 November
Week 47 in 2 November 18, 2 November 24, 2 November
Week 48 in 2 November 25, 2 December 1, 2 November / December
Week 49 in 2 December 2, 2 December 8, 2 December
Week 50 in 2 December 9, 2 December 15, 2 December
Week 51 in 2 December 16, 2 December 22, 2 December
Week 52 in 2 December 23, 2 December 29, 2 December

Calendars 2

January 2
MoTuWeThFrSaSu
Week 1123456
Week 278910111213
Week 314151617181920
Week 421222324252627
Week 528293031
February 2
MoTuWeThFrSaSu
Week 5123
Week 645678910
Week 711121314151617
Week 818192021222324
Week 925262728
March 2
MoTuWeThFrSaSu
Week 9123
Week 1045678910
Week 1111121314151617
Week 1218192021222324
Week 1325262728293031
April 2
MoTuWeThFrSaSu
Week 141234567
Week 15891011121314
Week 1615161718192021
Week 1722232425262728
Week 182930
May 2
MoTuWeThFrSaSu
Week 1812345
Week 196789101112
Week 2013141516171819
Week 2120212223242526
Week 222728293031
June 2
MoTuWeThFrSaSu
Week 2212
Week 233456789
Week 2410111213141516
Week 2517181920212223
Week 2624252627282930
July 2
MoTuWeThFrSaSu
Week 271234567
Week 28891011121314
Week 2915161718192021
Week 3022232425262728
Week 31293031
August 2
MoTuWeThFrSaSu
Week 311234
Week 32567891011
Week 3312131415161718
Week 3419202122232425
Week 35262728293031
September 2
MoTuWeThFrSaSu
Week 351
Week 362345678
Week 379101112131415
Week 3816171819202122
Week 3923242526272829
Week 4030
October 2
MoTuWeThFrSaSu
Week 40123456
Week 4178910111213
Week 4214151617181920
Week 4321222324252627
Week 4428293031
November 2
MoTuWeThFrSaSu
Week 44123
Week 4545678910
Week 4611121314151617
Week 4718192021222324
Week 48252627282930
December 2
MoTuWeThFrSaSu
Week 21
Week 492345678
Week 509101112131415
Week 5116171819202122
Week 5223242526272829
Week 13031

Download Calendar in printable A4 PDF

Find the week number of a date

How week numbers are counted

Most of the world numbers weeks according to the ISO 8601 standard. A week starts on Monday, and week 1 is the week that contains the first Thursday of the year, which is always the week that contains 4 January.

Week 1 of 2 starts on December 31, 1 and ends on January 6, 2 (ISO 8601, Monday to Sunday). 2 has 52 ISO weeks.

Because of this rule, the first days of January can belong to the last week of the previous year, and the last days of December can belong to week 1 of the next year.

In the United States, weeks usually start on Sunday and week 1 is the week that contains 1 January, so the US week number can differ from the ISO week number.

Frequently Asked Questions (FAQ)

How many weeks does 2 have?

2 has 52 ISO weeks.

When does week 1 of 2 start?

Week 1 of 2 starts on December 31, 1 and ends on January 6, 2 (ISO 8601, Monday to Sunday).

When does the last week of 2 end?

Week 52 of 2 starts on December 23, 2 and ends on December 29, 2 (ISO 8601, Monday to Sunday).

Which years have 53 weeks?

The next years with 53 ISO weeks are 4, 9, 15, 20, 26.

Why do the US and Europe show different week numbers?

Europe follows ISO 8601: weeks start on Monday and week 1 is the week with the first Thursday of the year. In the US, weeks usually start on Sunday and week 1 is the week that contains 1 January, so the two numbers can differ by one.