Week numbers 264

264 has 52 ISO weeks. Week 1: Jan 4 – 10 · Week 52: Dec 26, 264 – Jan 1, 265

264 at a glance

Weeks in 26452
Week 1January 4, 264 – January 10, 264
Week 52December 26, 264 – January 1, 265
Days in 264366
Leap yearYes

All Weeks in 264

Week From To Month
Week 1 in 264 January 4, 264 January 10, 264 January
Week 2 in 264 January 11, 264 January 17, 264 January
Week 3 in 264 January 18, 264 January 24, 264 January
Week 4 in 264 January 25, 264 January 31, 264 January
Week 5 in 264 February 1, 264 February 7, 264 February
Week 6 in 264 February 8, 264 February 14, 264 February
Week 7 in 264 February 15, 264 February 21, 264 February
Week 8 in 264 February 22, 264 February 28, 264 February
Week 9 in 264 February 29, 264 March 6, 264 February / March
Week 10 in 264 March 7, 264 March 13, 264 March
Week 11 in 264 March 14, 264 March 20, 264 March
Week 12 in 264 March 21, 264 March 27, 264 March
Week 13 in 264 March 28, 264 April 3, 264 March / April
Week 14 in 264 April 4, 264 April 10, 264 April
Week 15 in 264 April 11, 264 April 17, 264 April
Week 16 in 264 April 18, 264 April 24, 264 April
Week 17 in 264 April 25, 264 May 1, 264 April / May
Week 18 in 264 May 2, 264 May 8, 264 May
Week 19 in 264 May 9, 264 May 15, 264 May
Week 20 in 264 May 16, 264 May 22, 264 May
Week 21 in 264 May 23, 264 May 29, 264 May
Week 22 in 264 May 30, 264 June 5, 264 May / June
Week 23 in 264 June 6, 264 June 12, 264 June
Week 24 in 264 June 13, 264 June 19, 264 June
Week 25 in 264 June 20, 264 June 26, 264 June
Week 26 in 264 June 27, 264 July 3, 264 June / July
Week 27 in 264 July 4, 264 July 10, 264 July
Week 28 in 264 July 11, 264 July 17, 264 July
Week 29 in 264 July 18, 264 July 24, 264 July
Week 30 in 264 July 25, 264 July 31, 264 July
Week 31 in 264 August 1, 264 August 7, 264 August
Week 32 in 264 August 8, 264 August 14, 264 August
Week 33 in 264 August 15, 264 August 21, 264 August
Week 34 in 264 August 22, 264 August 28, 264 August
Week 35 in 264 August 29, 264 September 4, 264 August / September
Week 36 in 264 September 5, 264 September 11, 264 September
Week 37 in 264 September 12, 264 September 18, 264 September
Week 38 in 264 September 19, 264 September 25, 264 September
Week 39 in 264 September 26, 264 October 2, 264 September / October
Week 40 in 264 October 3, 264 October 9, 264 October
Week 41 in 264 October 10, 264 October 16, 264 October
Week 42 in 264 October 17, 264 October 23, 264 October
Week 43 in 264 October 24, 264 October 30, 264 October
Week 44 in 264 October 31, 264 November 6, 264 October / November
Week 45 in 264 November 7, 264 November 13, 264 November
Week 46 in 264 November 14, 264 November 20, 264 November
Week 47 in 264 November 21, 264 November 27, 264 November
Week 48 in 264 November 28, 264 December 4, 264 November / December
Week 49 in 264 December 5, 264 December 11, 264 December
Week 50 in 264 December 12, 264 December 18, 264 December
Week 51 in 264 December 19, 264 December 25, 264 December
Week 52 in 264 December 26, 264 January 1, 265 December / January

Calendars 264

January 264
MoTuWeThFrSaSu
Week 53123
Week 145678910
Week 211121314151617
Week 318192021222324
Week 425262728293031
February 264
MoTuWeThFrSaSu
Week 51234567
Week 6891011121314
Week 715161718192021
Week 822232425262728
Week 929
March 264
MoTuWeThFrSaSu
Week 9123456
Week 1078910111213
Week 1114151617181920
Week 1221222324252627
Week 1328293031
April 264
MoTuWeThFrSaSu
Week 13123
Week 1445678910
Week 1511121314151617
Week 1618192021222324
Week 17252627282930
May 264
MoTuWeThFrSaSu
Week 171
Week 182345678
Week 199101112131415
Week 2016171819202122
Week 2123242526272829
Week 223031
June 264
MoTuWeThFrSaSu
Week 2212345
Week 236789101112
Week 2413141516171819
Week 2520212223242526
Week 2627282930
July 264
MoTuWeThFrSaSu
Week 26123
Week 2745678910
Week 2811121314151617
Week 2918192021222324
Week 3025262728293031
August 264
MoTuWeThFrSaSu
Week 311234567
Week 32891011121314
Week 3315161718192021
Week 3422232425262728
Week 35293031
September 264
MoTuWeThFrSaSu
Week 351234
Week 36567891011
Week 3712131415161718
Week 3819202122232425
Week 392627282930
October 264
MoTuWeThFrSaSu
Week 3912
Week 403456789
Week 4110111213141516
Week 4217181920212223
Week 4324252627282930
Week 4431
November 264
MoTuWeThFrSaSu
Week 44123456
Week 4578910111213
Week 4614151617181920
Week 4721222324252627
Week 48282930
December 264
MoTuWeThFrSaSu
Week 11234
Week 49567891011
Week 5012131415161718
Week 5119202122232425
Week 52262728293031

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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 264 starts on January 4, 264 and ends on January 10, 264 (ISO 8601, Monday to Sunday). 264 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 264 have?

264 has 52 ISO weeks.

When does week 1 of 264 start?

Week 1 of 264 starts on January 4, 264 and ends on January 10, 264 (ISO 8601, Monday to Sunday).

When does the last week of 264 end?

Week 52 of 264 starts on December 26, 264 and ends on January 1, 265 (ISO 8601, Monday to Sunday).

Which years have 53 weeks?

The next years with 53 ISO weeks are 268, 274, 280, 285, 291.

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.