Week numbers 5191

5191 has 52 ISO weeks. Week 1: Dec 31, 5190 – Jan 6, 5191 · Week 52: Dec 23 – 29

5191 at a glance

Weeks in 519152
Week 1December 31, 5190 – January 6, 5191
Week 52December 23, 5191 – December 29, 5191
Days in 5191365
Leap yearNo

All Weeks in 5191

Week From To Month
Week 1 in 5191 December 31, 5190 January 6, 5191 December / January
Week 2 in 5191 January 7, 5191 January 13, 5191 January
Week 3 in 5191 January 14, 5191 January 20, 5191 January
Week 4 in 5191 January 21, 5191 January 27, 5191 January
Week 5 in 5191 January 28, 5191 February 3, 5191 January / February
Week 6 in 5191 February 4, 5191 February 10, 5191 February
Week 7 in 5191 February 11, 5191 February 17, 5191 February
Week 8 in 5191 February 18, 5191 February 24, 5191 February
Week 9 in 5191 February 25, 5191 March 3, 5191 February / March
Week 10 in 5191 March 4, 5191 March 10, 5191 March
Week 11 in 5191 March 11, 5191 March 17, 5191 March
Week 12 in 5191 March 18, 5191 March 24, 5191 March
Week 13 in 5191 March 25, 5191 March 31, 5191 March
Week 14 in 5191 April 1, 5191 April 7, 5191 April
Week 15 in 5191 April 8, 5191 April 14, 5191 April
Week 16 in 5191 April 15, 5191 April 21, 5191 April
Week 17 in 5191 April 22, 5191 April 28, 5191 April
Week 18 in 5191 April 29, 5191 May 5, 5191 April / May
Week 19 in 5191 May 6, 5191 May 12, 5191 May
Week 20 in 5191 May 13, 5191 May 19, 5191 May
Week 21 in 5191 May 20, 5191 May 26, 5191 May
Week 22 in 5191 May 27, 5191 June 2, 5191 May / June
Week 23 in 5191 June 3, 5191 June 9, 5191 June
Week 24 in 5191 June 10, 5191 June 16, 5191 June
Week 25 in 5191 June 17, 5191 June 23, 5191 June
Week 26 in 5191 June 24, 5191 June 30, 5191 June
Week 27 in 5191 July 1, 5191 July 7, 5191 July
Week 28 in 5191 July 8, 5191 July 14, 5191 July
Week 29 in 5191 July 15, 5191 July 21, 5191 July
Week 30 in 5191 July 22, 5191 July 28, 5191 July
Week 31 in 5191 July 29, 5191 August 4, 5191 July / August
Week 32 in 5191 August 5, 5191 August 11, 5191 August
Week 33 in 5191 August 12, 5191 August 18, 5191 August
Week 34 in 5191 August 19, 5191 August 25, 5191 August
Week 35 in 5191 August 26, 5191 September 1, 5191 August / September
Week 36 in 5191 September 2, 5191 September 8, 5191 September
Week 37 in 5191 September 9, 5191 September 15, 5191 September
Week 38 in 5191 September 16, 5191 September 22, 5191 September
Week 39 in 5191 September 23, 5191 September 29, 5191 September
Week 40 in 5191 September 30, 5191 October 6, 5191 September / October
Week 41 in 5191 October 7, 5191 October 13, 5191 October
Week 42 in 5191 October 14, 5191 October 20, 5191 October
Week 43 in 5191 October 21, 5191 October 27, 5191 October
Week 44 in 5191 October 28, 5191 November 3, 5191 October / November
Week 45 in 5191 November 4, 5191 November 10, 5191 November
Week 46 in 5191 November 11, 5191 November 17, 5191 November
Week 47 in 5191 November 18, 5191 November 24, 5191 November
Week 48 in 5191 November 25, 5191 December 1, 5191 November / December
Week 49 in 5191 December 2, 5191 December 8, 5191 December
Week 50 in 5191 December 9, 5191 December 15, 5191 December
Week 51 in 5191 December 16, 5191 December 22, 5191 December
Week 52 in 5191 December 23, 5191 December 29, 5191 December

Calendars 5191

January 5191
MoTuWeThFrSaSu
Week 1123456
Week 278910111213
Week 314151617181920
Week 421222324252627
Week 528293031
February 5191
MoTuWeThFrSaSu
Week 5123
Week 645678910
Week 711121314151617
Week 818192021222324
Week 925262728
March 5191
MoTuWeThFrSaSu
Week 9123
Week 1045678910
Week 1111121314151617
Week 1218192021222324
Week 1325262728293031
April 5191
MoTuWeThFrSaSu
Week 141234567
Week 15891011121314
Week 1615161718192021
Week 1722232425262728
Week 182930
May 5191
MoTuWeThFrSaSu
Week 1812345
Week 196789101112
Week 2013141516171819
Week 2120212223242526
Week 222728293031
June 5191
MoTuWeThFrSaSu
Week 2212
Week 233456789
Week 2410111213141516
Week 2517181920212223
Week 2624252627282930
July 5191
MoTuWeThFrSaSu
Week 271234567
Week 28891011121314
Week 2915161718192021
Week 3022232425262728
Week 31293031
August 5191
MoTuWeThFrSaSu
Week 311234
Week 32567891011
Week 3312131415161718
Week 3419202122232425
Week 35262728293031
September 5191
MoTuWeThFrSaSu
Week 351
Week 362345678
Week 379101112131415
Week 3816171819202122
Week 3923242526272829
Week 4030
October 5191
MoTuWeThFrSaSu
Week 40123456
Week 4178910111213
Week 4214151617181920
Week 4321222324252627
Week 4428293031
November 5191
MoTuWeThFrSaSu
Week 44123
Week 4545678910
Week 4611121314151617
Week 4718192021222324
Week 48252627282930
December 5191
MoTuWeThFrSaSu
Week 21
Week 492345678
Week 509101112131415
Week 5116171819202122
Week 5223242526272829
Week 13031

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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 5191 starts on December 31, 5190 and ends on January 6, 5191 (ISO 8601, Monday to Sunday). 5191 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 5191 have?

5191 has 52 ISO weeks.

When does week 1 of 5191 start?

Week 1 of 5191 starts on December 31, 5190 and ends on January 6, 5191 (ISO 8601, Monday to Sunday).

When does the last week of 5191 end?

Week 52 of 5191 starts on December 23, 5191 and ends on December 29, 5191 (ISO 8601, Monday to Sunday).

Which years have 53 weeks?

The next years with 53 ISO weeks are 5192, 5198, 5204, 5209, 5215.

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.