Week numbers 1279

1279 has 52 ISO weeks. Week 1: Jan 2 – 8 · Week 52: Dec 25 – 31

1279 at a glance

Weeks in 127952
Week 1January 2, 1279 – January 8, 1279
Week 52December 25, 1279 – December 31, 1279
Days in 1279365
Leap yearNo

All Weeks in 1279

Week From To Month
Week 1 in 1279 January 2, 1279 January 8, 1279 January
Week 2 in 1279 January 9, 1279 January 15, 1279 January
Week 3 in 1279 January 16, 1279 January 22, 1279 January
Week 4 in 1279 January 23, 1279 January 29, 1279 January
Week 5 in 1279 January 30, 1279 February 5, 1279 January / February
Week 6 in 1279 February 6, 1279 February 12, 1279 February
Week 7 in 1279 February 13, 1279 February 19, 1279 February
Week 8 in 1279 February 20, 1279 February 26, 1279 February
Week 9 in 1279 February 27, 1279 March 5, 1279 February / March
Week 10 in 1279 March 6, 1279 March 12, 1279 March
Week 11 in 1279 March 13, 1279 March 19, 1279 March
Week 12 in 1279 March 20, 1279 March 26, 1279 March
Week 13 in 1279 March 27, 1279 April 2, 1279 March / April
Week 14 in 1279 April 3, 1279 April 9, 1279 April
Week 15 in 1279 April 10, 1279 April 16, 1279 April
Week 16 in 1279 April 17, 1279 April 23, 1279 April
Week 17 in 1279 April 24, 1279 April 30, 1279 April
Week 18 in 1279 May 1, 1279 May 7, 1279 May
Week 19 in 1279 May 8, 1279 May 14, 1279 May
Week 20 in 1279 May 15, 1279 May 21, 1279 May
Week 21 in 1279 May 22, 1279 May 28, 1279 May
Week 22 in 1279 May 29, 1279 June 4, 1279 May / June
Week 23 in 1279 June 5, 1279 June 11, 1279 June
Week 24 in 1279 June 12, 1279 June 18, 1279 June
Week 25 in 1279 June 19, 1279 June 25, 1279 June
Week 26 in 1279 June 26, 1279 July 2, 1279 June / July
Week 27 in 1279 July 3, 1279 July 9, 1279 July
Week 28 in 1279 July 10, 1279 July 16, 1279 July
Week 29 in 1279 July 17, 1279 July 23, 1279 July
Week 30 in 1279 July 24, 1279 July 30, 1279 July
Week 31 in 1279 July 31, 1279 August 6, 1279 July / August
Week 32 in 1279 August 7, 1279 August 13, 1279 August
Week 33 in 1279 August 14, 1279 August 20, 1279 August
Week 34 in 1279 August 21, 1279 August 27, 1279 August
Week 35 in 1279 August 28, 1279 September 3, 1279 August / September
Week 36 in 1279 September 4, 1279 September 10, 1279 September
Week 37 in 1279 September 11, 1279 September 17, 1279 September
Week 38 in 1279 September 18, 1279 September 24, 1279 September
Week 39 in 1279 September 25, 1279 October 1, 1279 September / October
Week 40 in 1279 October 2, 1279 October 8, 1279 October
Week 41 in 1279 October 9, 1279 October 15, 1279 October
Week 42 in 1279 October 16, 1279 October 22, 1279 October
Week 43 in 1279 October 23, 1279 October 29, 1279 October
Week 44 in 1279 October 30, 1279 November 5, 1279 October / November
Week 45 in 1279 November 6, 1279 November 12, 1279 November
Week 46 in 1279 November 13, 1279 November 19, 1279 November
Week 47 in 1279 November 20, 1279 November 26, 1279 November
Week 48 in 1279 November 27, 1279 December 3, 1279 November / December
Week 49 in 1279 December 4, 1279 December 10, 1279 December
Week 50 in 1279 December 11, 1279 December 17, 1279 December
Week 51 in 1279 December 18, 1279 December 24, 1279 December
Week 52 in 1279 December 25, 1279 December 31, 1279 December

Calendars 1279

January 1279
MoTuWeThFrSaSu
Week 521
Week 12345678
Week 29101112131415
Week 316171819202122
Week 423242526272829
Week 53031
February 1279
MoTuWeThFrSaSu
Week 512345
Week 66789101112
Week 713141516171819
Week 820212223242526
Week 92728
March 1279
MoTuWeThFrSaSu
Week 912345
Week 106789101112
Week 1113141516171819
Week 1220212223242526
Week 132728293031
April 1279
MoTuWeThFrSaSu
Week 1312
Week 143456789
Week 1510111213141516
Week 1617181920212223
Week 1724252627282930
May 1279
MoTuWeThFrSaSu
Week 181234567
Week 19891011121314
Week 2015161718192021
Week 2122232425262728
Week 22293031
June 1279
MoTuWeThFrSaSu
Week 221234
Week 23567891011
Week 2412131415161718
Week 2519202122232425
Week 262627282930
July 1279
MoTuWeThFrSaSu
Week 2612
Week 273456789
Week 2810111213141516
Week 2917181920212223
Week 3024252627282930
Week 3131
August 1279
MoTuWeThFrSaSu
Week 31123456
Week 3278910111213
Week 3314151617181920
Week 3421222324252627
Week 3528293031
September 1279
MoTuWeThFrSaSu
Week 35123
Week 3645678910
Week 3711121314151617
Week 3818192021222324
Week 39252627282930
October 1279
MoTuWeThFrSaSu
Week 391
Week 402345678
Week 419101112131415
Week 4216171819202122
Week 4323242526272829
Week 443031
November 1279
MoTuWeThFrSaSu
Week 4412345
Week 456789101112
Week 4613141516171819
Week 4720212223242526
Week 4827282930
December 1279
MoTuWeThFrSaSu
Week 1123
Week 4945678910
Week 5011121314151617
Week 5118192021222324
Week 5225262728293031

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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 1279 starts on January 2, 1279 and ends on January 8, 1279 (ISO 8601, Monday to Sunday). 1279 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 1279 have?

1279 has 52 ISO weeks.

When does week 1 of 1279 start?

Week 1 of 1279 starts on January 2, 1279 and ends on January 8, 1279 (ISO 8601, Monday to Sunday).

When does the last week of 1279 end?

Week 52 of 1279 starts on December 25, 1279 and ends on December 31, 1279 (ISO 8601, Monday to Sunday).

Which years have 53 weeks?

The next years with 53 ISO weeks are 1282, 1288, 1293, 1299, 1305.

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.