Week numbers 111

111 has 53 ISO weeks, because 1 January 111 falls on a Thursday. Week 1: Dec 29, 110 – Jan 4, 111 · Week 53: Dec 28, 111 – Jan 3, 112

111 at a glance

Weeks in 11153
Week 1December 29, 110 – January 4, 111
Week 53December 28, 111 – January 3, 112
Days in 111365
Leap yearNo

All Weeks in 111

Week From To Month
Week 1 in 111 December 29, 110 January 4, 111 December / January
Week 2 in 111 January 5, 111 January 11, 111 January
Week 3 in 111 January 12, 111 January 18, 111 January
Week 4 in 111 January 19, 111 January 25, 111 January
Week 5 in 111 January 26, 111 February 1, 111 January / February
Week 6 in 111 February 2, 111 February 8, 111 February
Week 7 in 111 February 9, 111 February 15, 111 February
Week 8 in 111 February 16, 111 February 22, 111 February
Week 9 in 111 February 23, 111 March 1, 111 February / March
Week 10 in 111 March 2, 111 March 8, 111 March
Week 11 in 111 March 9, 111 March 15, 111 March
Week 12 in 111 March 16, 111 March 22, 111 March
Week 13 in 111 March 23, 111 March 29, 111 March
Week 14 in 111 March 30, 111 April 5, 111 March / April
Week 15 in 111 April 6, 111 April 12, 111 April
Week 16 in 111 April 13, 111 April 19, 111 April
Week 17 in 111 April 20, 111 April 26, 111 April
Week 18 in 111 April 27, 111 May 3, 111 April / May
Week 19 in 111 May 4, 111 May 10, 111 May
Week 20 in 111 May 11, 111 May 17, 111 May
Week 21 in 111 May 18, 111 May 24, 111 May
Week 22 in 111 May 25, 111 May 31, 111 May
Week 23 in 111 June 1, 111 June 7, 111 June
Week 24 in 111 June 8, 111 June 14, 111 June
Week 25 in 111 June 15, 111 June 21, 111 June
Week 26 in 111 June 22, 111 June 28, 111 June
Week 27 in 111 June 29, 111 July 5, 111 June / July
Week 28 in 111 July 6, 111 July 12, 111 July
Week 29 in 111 July 13, 111 July 19, 111 July
Week 30 in 111 July 20, 111 July 26, 111 July
Week 31 in 111 July 27, 111 August 2, 111 July / August
Week 32 in 111 August 3, 111 August 9, 111 August
Week 33 in 111 August 10, 111 August 16, 111 August
Week 34 in 111 August 17, 111 August 23, 111 August
Week 35 in 111 August 24, 111 August 30, 111 August
Week 36 in 111 August 31, 111 September 6, 111 August / September
Week 37 in 111 September 7, 111 September 13, 111 September
Week 38 in 111 September 14, 111 September 20, 111 September
Week 39 in 111 September 21, 111 September 27, 111 September
Week 40 in 111 September 28, 111 October 4, 111 September / October
Week 41 in 111 October 5, 111 October 11, 111 October
Week 42 in 111 October 12, 111 October 18, 111 October
Week 43 in 111 October 19, 111 October 25, 111 October
Week 44 in 111 October 26, 111 November 1, 111 October / November
Week 45 in 111 November 2, 111 November 8, 111 November
Week 46 in 111 November 9, 111 November 15, 111 November
Week 47 in 111 November 16, 111 November 22, 111 November
Week 48 in 111 November 23, 111 November 29, 111 November
Week 49 in 111 November 30, 111 December 6, 111 November / December
Week 50 in 111 December 7, 111 December 13, 111 December
Week 51 in 111 December 14, 111 December 20, 111 December
Week 52 in 111 December 21, 111 December 27, 111 December
Week 53 in 111 December 28, 111 January 3, 112 December / January

Calendars 111

January 111
MoTuWeThFrSaSu
Week 11234
Week 2567891011
Week 312131415161718
Week 419202122232425
Week 5262728293031
February 111
MoTuWeThFrSaSu
Week 51
Week 62345678
Week 79101112131415
Week 816171819202122
Week 9232425262728
March 111
MoTuWeThFrSaSu
Week 91
Week 102345678
Week 119101112131415
Week 1216171819202122
Week 1323242526272829
Week 143031
April 111
MoTuWeThFrSaSu
Week 1412345
Week 156789101112
Week 1613141516171819
Week 1720212223242526
Week 1827282930
May 111
MoTuWeThFrSaSu
Week 18123
Week 1945678910
Week 2011121314151617
Week 2118192021222324
Week 2225262728293031
June 111
MoTuWeThFrSaSu
Week 231234567
Week 24891011121314
Week 2515161718192021
Week 2622232425262728
Week 272930
July 111
MoTuWeThFrSaSu
Week 2712345
Week 286789101112
Week 2913141516171819
Week 3020212223242526
Week 312728293031
August 111
MoTuWeThFrSaSu
Week 3112
Week 323456789
Week 3310111213141516
Week 3417181920212223
Week 3524252627282930
Week 3631
September 111
MoTuWeThFrSaSu
Week 36123456
Week 3778910111213
Week 3814151617181920
Week 3921222324252627
Week 40282930
October 111
MoTuWeThFrSaSu
Week 401234
Week 41567891011
Week 4212131415161718
Week 4319202122232425
Week 44262728293031
November 111
MoTuWeThFrSaSu
Week 441
Week 452345678
Week 469101112131415
Week 4716171819202122
Week 4823242526272829
Week 4930
December 111
MoTuWeThFrSaSu
Week 2123456
Week 5078910111213
Week 5114151617181920
Week 5221222324252627
Week 5328293031

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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 111 starts on December 29, 110 and ends on January 4, 111 (ISO 8601, Monday to Sunday). 111 has 53 ISO weeks, because 1 January 111 falls on a Thursday.

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 111 have?

111 has 53 ISO weeks, because 1 January 111 falls on a Thursday.

When does week 1 of 111 start?

Week 1 of 111 starts on December 29, 110 and ends on January 4, 111 (ISO 8601, Monday to Sunday).

When does the last week of 111 end?

Week 53 of 111 starts on December 28, 111 and ends on January 3, 112 (ISO 8601, Monday to Sunday).

Which years have 53 weeks?

The next years with 53 ISO weeks are 111, 116, 122, 128, 133.

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.