Week numbers 5180

5180 has 52 ISO weeks. Week 1: Dec 31, 5179 – Jan 6, 5180 · Week 52: Dec 22 – 28

5180 at a glance

Weeks in 518052
Week 1December 31, 5179 – January 6, 5180
Week 52December 22, 5180 – December 28, 5180
Days in 5180366
Leap yearYes

All Weeks in 5180

Week From To Month
Week 1 in 5180 December 31, 5179 January 6, 5180 December / January
Week 2 in 5180 January 7, 5180 January 13, 5180 January
Week 3 in 5180 January 14, 5180 January 20, 5180 January
Week 4 in 5180 January 21, 5180 January 27, 5180 January
Week 5 in 5180 January 28, 5180 February 3, 5180 January / February
Week 6 in 5180 February 4, 5180 February 10, 5180 February
Week 7 in 5180 February 11, 5180 February 17, 5180 February
Week 8 in 5180 February 18, 5180 February 24, 5180 February
Week 9 in 5180 February 25, 5180 March 2, 5180 February / March
Week 10 in 5180 March 3, 5180 March 9, 5180 March
Week 11 in 5180 March 10, 5180 March 16, 5180 March
Week 12 in 5180 March 17, 5180 March 23, 5180 March
Week 13 in 5180 March 24, 5180 March 30, 5180 March
Week 14 in 5180 March 31, 5180 April 6, 5180 March / April
Week 15 in 5180 April 7, 5180 April 13, 5180 April
Week 16 in 5180 April 14, 5180 April 20, 5180 April
Week 17 in 5180 April 21, 5180 April 27, 5180 April
Week 18 in 5180 April 28, 5180 May 4, 5180 April / May
Week 19 in 5180 May 5, 5180 May 11, 5180 May
Week 20 in 5180 May 12, 5180 May 18, 5180 May
Week 21 in 5180 May 19, 5180 May 25, 5180 May
Week 22 in 5180 May 26, 5180 June 1, 5180 May / June
Week 23 in 5180 June 2, 5180 June 8, 5180 June
Week 24 in 5180 June 9, 5180 June 15, 5180 June
Week 25 in 5180 June 16, 5180 June 22, 5180 June
Week 26 in 5180 June 23, 5180 June 29, 5180 June
Week 27 in 5180 June 30, 5180 July 6, 5180 June / July
Week 28 in 5180 July 7, 5180 July 13, 5180 July
Week 29 in 5180 July 14, 5180 July 20, 5180 July
Week 30 in 5180 July 21, 5180 July 27, 5180 July
Week 31 in 5180 July 28, 5180 August 3, 5180 July / August
Week 32 in 5180 August 4, 5180 August 10, 5180 August
Week 33 in 5180 August 11, 5180 August 17, 5180 August
Week 34 in 5180 August 18, 5180 August 24, 5180 August
Week 35 in 5180 August 25, 5180 August 31, 5180 August
Week 36 in 5180 September 1, 5180 September 7, 5180 September
Week 37 in 5180 September 8, 5180 September 14, 5180 September
Week 38 in 5180 September 15, 5180 September 21, 5180 September
Week 39 in 5180 September 22, 5180 September 28, 5180 September
Week 40 in 5180 September 29, 5180 October 5, 5180 September / October
Week 41 in 5180 October 6, 5180 October 12, 5180 October
Week 42 in 5180 October 13, 5180 October 19, 5180 October
Week 43 in 5180 October 20, 5180 October 26, 5180 October
Week 44 in 5180 October 27, 5180 November 2, 5180 October / November
Week 45 in 5180 November 3, 5180 November 9, 5180 November
Week 46 in 5180 November 10, 5180 November 16, 5180 November
Week 47 in 5180 November 17, 5180 November 23, 5180 November
Week 48 in 5180 November 24, 5180 November 30, 5180 November
Week 49 in 5180 December 1, 5180 December 7, 5180 December
Week 50 in 5180 December 8, 5180 December 14, 5180 December
Week 51 in 5180 December 15, 5180 December 21, 5180 December
Week 52 in 5180 December 22, 5180 December 28, 5180 December

Calendars 5180

January 5180
MoTuWeThFrSaSu
Week 1123456
Week 278910111213
Week 314151617181920
Week 421222324252627
Week 528293031
February 5180
MoTuWeThFrSaSu
Week 5123
Week 645678910
Week 711121314151617
Week 818192021222324
Week 92526272829
March 5180
MoTuWeThFrSaSu
Week 912
Week 103456789
Week 1110111213141516
Week 1217181920212223
Week 1324252627282930
Week 1431
April 5180
MoTuWeThFrSaSu
Week 14123456
Week 1578910111213
Week 1614151617181920
Week 1721222324252627
Week 18282930
May 5180
MoTuWeThFrSaSu
Week 181234
Week 19567891011
Week 2012131415161718
Week 2119202122232425
Week 22262728293031
June 5180
MoTuWeThFrSaSu
Week 221
Week 232345678
Week 249101112131415
Week 2516171819202122
Week 2623242526272829
Week 2730
July 5180
MoTuWeThFrSaSu
Week 27123456
Week 2878910111213
Week 2914151617181920
Week 3021222324252627
Week 3128293031
August 5180
MoTuWeThFrSaSu
Week 31123
Week 3245678910
Week 3311121314151617
Week 3418192021222324
Week 3525262728293031
September 5180
MoTuWeThFrSaSu
Week 361234567
Week 37891011121314
Week 3815161718192021
Week 3922232425262728
Week 402930
October 5180
MoTuWeThFrSaSu
Week 4012345
Week 416789101112
Week 4213141516171819
Week 4320212223242526
Week 442728293031
November 5180
MoTuWeThFrSaSu
Week 4412
Week 453456789
Week 4610111213141516
Week 4717181920212223
Week 4824252627282930
December 5180
MoTuWeThFrSaSu
Week 491234567
Week 50891011121314
Week 5115161718192021
Week 5222232425262728
Week 1293031

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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 5180 starts on December 31, 5179 and ends on January 6, 5180 (ISO 8601, Monday to Sunday). 5180 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 5180 have?

5180 has 52 ISO weeks.

When does week 1 of 5180 start?

Week 1 of 5180 starts on December 31, 5179 and ends on January 6, 5180 (ISO 8601, Monday to Sunday).

When does the last week of 5180 end?

Week 52 of 5180 starts on December 22, 5180 and ends on December 28, 5180 (ISO 8601, Monday to Sunday).

Which years have 53 weeks?

The next years with 53 ISO weeks are 5181, 5187, 5192, 5198, 5204.

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.