Week numbers 191

191 has 52 ISO weeks. Week 1: Jan 3 – 9 · Week 52: Dec 26, 191 – Jan 1, 192

191 at a glance

Weeks in 19152
Week 1January 3, 191 – January 9, 191
Week 52December 26, 191 – January 1, 192
Days in 191365
Leap yearNo

All Weeks in 191

Week From To Month
Week 1 in 191 January 3, 191 January 9, 191 January
Week 2 in 191 January 10, 191 January 16, 191 January
Week 3 in 191 January 17, 191 January 23, 191 January
Week 4 in 191 January 24, 191 January 30, 191 January
Week 5 in 191 January 31, 191 February 6, 191 January / February
Week 6 in 191 February 7, 191 February 13, 191 February
Week 7 in 191 February 14, 191 February 20, 191 February
Week 8 in 191 February 21, 191 February 27, 191 February
Week 9 in 191 February 28, 191 March 6, 191 February / March
Week 10 in 191 March 7, 191 March 13, 191 March
Week 11 in 191 March 14, 191 March 20, 191 March
Week 12 in 191 March 21, 191 March 27, 191 March
Week 13 in 191 March 28, 191 April 3, 191 March / April
Week 14 in 191 April 4, 191 April 10, 191 April
Week 15 in 191 April 11, 191 April 17, 191 April
Week 16 in 191 April 18, 191 April 24, 191 April
Week 17 in 191 April 25, 191 May 1, 191 April / May
Week 18 in 191 May 2, 191 May 8, 191 May
Week 19 in 191 May 9, 191 May 15, 191 May
Week 20 in 191 May 16, 191 May 22, 191 May
Week 21 in 191 May 23, 191 May 29, 191 May
Week 22 in 191 May 30, 191 June 5, 191 May / June
Week 23 in 191 June 6, 191 June 12, 191 June
Week 24 in 191 June 13, 191 June 19, 191 June
Week 25 in 191 June 20, 191 June 26, 191 June
Week 26 in 191 June 27, 191 July 3, 191 June / July
Week 27 in 191 July 4, 191 July 10, 191 July
Week 28 in 191 July 11, 191 July 17, 191 July
Week 29 in 191 July 18, 191 July 24, 191 July
Week 30 in 191 July 25, 191 July 31, 191 July
Week 31 in 191 August 1, 191 August 7, 191 August
Week 32 in 191 August 8, 191 August 14, 191 August
Week 33 in 191 August 15, 191 August 21, 191 August
Week 34 in 191 August 22, 191 August 28, 191 August
Week 35 in 191 August 29, 191 September 4, 191 August / September
Week 36 in 191 September 5, 191 September 11, 191 September
Week 37 in 191 September 12, 191 September 18, 191 September
Week 38 in 191 September 19, 191 September 25, 191 September
Week 39 in 191 September 26, 191 October 2, 191 September / October
Week 40 in 191 October 3, 191 October 9, 191 October
Week 41 in 191 October 10, 191 October 16, 191 October
Week 42 in 191 October 17, 191 October 23, 191 October
Week 43 in 191 October 24, 191 October 30, 191 October
Week 44 in 191 October 31, 191 November 6, 191 October / November
Week 45 in 191 November 7, 191 November 13, 191 November
Week 46 in 191 November 14, 191 November 20, 191 November
Week 47 in 191 November 21, 191 November 27, 191 November
Week 48 in 191 November 28, 191 December 4, 191 November / December
Week 49 in 191 December 5, 191 December 11, 191 December
Week 50 in 191 December 12, 191 December 18, 191 December
Week 51 in 191 December 19, 191 December 25, 191 December
Week 52 in 191 December 26, 191 January 1, 192 December / January

Calendars 191

January 191
MoTuWeThFrSaSu
Week 5212
Week 13456789
Week 210111213141516
Week 317181920212223
Week 424252627282930
Week 531
February 191
MoTuWeThFrSaSu
Week 5123456
Week 678910111213
Week 714151617181920
Week 821222324252627
Week 928
March 191
MoTuWeThFrSaSu
Week 9123456
Week 1078910111213
Week 1114151617181920
Week 1221222324252627
Week 1328293031
April 191
MoTuWeThFrSaSu
Week 13123
Week 1445678910
Week 1511121314151617
Week 1618192021222324
Week 17252627282930
May 191
MoTuWeThFrSaSu
Week 171
Week 182345678
Week 199101112131415
Week 2016171819202122
Week 2123242526272829
Week 223031
June 191
MoTuWeThFrSaSu
Week 2212345
Week 236789101112
Week 2413141516171819
Week 2520212223242526
Week 2627282930
July 191
MoTuWeThFrSaSu
Week 26123
Week 2745678910
Week 2811121314151617
Week 2918192021222324
Week 3025262728293031
August 191
MoTuWeThFrSaSu
Week 311234567
Week 32891011121314
Week 3315161718192021
Week 3422232425262728
Week 35293031
September 191
MoTuWeThFrSaSu
Week 351234
Week 36567891011
Week 3712131415161718
Week 3819202122232425
Week 392627282930
October 191
MoTuWeThFrSaSu
Week 3912
Week 403456789
Week 4110111213141516
Week 4217181920212223
Week 4324252627282930
Week 4431
November 191
MoTuWeThFrSaSu
Week 44123456
Week 4578910111213
Week 4614151617181920
Week 4721222324252627
Week 48282930
December 191
MoTuWeThFrSaSu
Week 11234
Week 49567891011
Week 5012131415161718
Week 5119202122232425
Week 52262728293031

Download Calendar in printable A4 PDF

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 191 starts on January 3, 191 and ends on January 9, 191 (ISO 8601, Monday to Sunday). 191 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 191 have?

191 has 52 ISO weeks.

When does week 1 of 191 start?

Week 1 of 191 starts on January 3, 191 and ends on January 9, 191 (ISO 8601, Monday to Sunday).

When does the last week of 191 end?

Week 52 of 191 starts on December 26, 191 and ends on January 1, 192 (ISO 8601, Monday to Sunday).

Which years have 53 weeks?

The next years with 53 ISO weeks are 195, 201, 207, 212, 218.

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.