Week numbers 168

168 has 52 ISO weeks. Week 1: Jan 4 – 10 · Week 52: Dec 26, 168 – Jan 1, 169

168 at a glance

Weeks in 16852
Week 1January 4, 168 – January 10, 168
Week 52December 26, 168 – January 1, 169
Days in 168366
Leap yearYes

All Weeks in 168

Week From To Month
Week 1 in 168 January 4, 168 January 10, 168 January
Week 2 in 168 January 11, 168 January 17, 168 January
Week 3 in 168 January 18, 168 January 24, 168 January
Week 4 in 168 January 25, 168 January 31, 168 January
Week 5 in 168 February 1, 168 February 7, 168 February
Week 6 in 168 February 8, 168 February 14, 168 February
Week 7 in 168 February 15, 168 February 21, 168 February
Week 8 in 168 February 22, 168 February 28, 168 February
Week 9 in 168 February 29, 168 March 6, 168 February / March
Week 10 in 168 March 7, 168 March 13, 168 March
Week 11 in 168 March 14, 168 March 20, 168 March
Week 12 in 168 March 21, 168 March 27, 168 March
Week 13 in 168 March 28, 168 April 3, 168 March / April
Week 14 in 168 April 4, 168 April 10, 168 April
Week 15 in 168 April 11, 168 April 17, 168 April
Week 16 in 168 April 18, 168 April 24, 168 April
Week 17 in 168 April 25, 168 May 1, 168 April / May
Week 18 in 168 May 2, 168 May 8, 168 May
Week 19 in 168 May 9, 168 May 15, 168 May
Week 20 in 168 May 16, 168 May 22, 168 May
Week 21 in 168 May 23, 168 May 29, 168 May
Week 22 in 168 May 30, 168 June 5, 168 May / June
Week 23 in 168 June 6, 168 June 12, 168 June
Week 24 in 168 June 13, 168 June 19, 168 June
Week 25 in 168 June 20, 168 June 26, 168 June
Week 26 in 168 June 27, 168 July 3, 168 June / July
Week 27 in 168 July 4, 168 July 10, 168 July
Week 28 in 168 July 11, 168 July 17, 168 July
Week 29 in 168 July 18, 168 July 24, 168 July
Week 30 in 168 July 25, 168 July 31, 168 July
Week 31 in 168 August 1, 168 August 7, 168 August
Week 32 in 168 August 8, 168 August 14, 168 August
Week 33 in 168 August 15, 168 August 21, 168 August
Week 34 in 168 August 22, 168 August 28, 168 August
Week 35 in 168 August 29, 168 September 4, 168 August / September
Week 36 in 168 September 5, 168 September 11, 168 September
Week 37 in 168 September 12, 168 September 18, 168 September
Week 38 in 168 September 19, 168 September 25, 168 September
Week 39 in 168 September 26, 168 October 2, 168 September / October
Week 40 in 168 October 3, 168 October 9, 168 October
Week 41 in 168 October 10, 168 October 16, 168 October
Week 42 in 168 October 17, 168 October 23, 168 October
Week 43 in 168 October 24, 168 October 30, 168 October
Week 44 in 168 October 31, 168 November 6, 168 October / November
Week 45 in 168 November 7, 168 November 13, 168 November
Week 46 in 168 November 14, 168 November 20, 168 November
Week 47 in 168 November 21, 168 November 27, 168 November
Week 48 in 168 November 28, 168 December 4, 168 November / December
Week 49 in 168 December 5, 168 December 11, 168 December
Week 50 in 168 December 12, 168 December 18, 168 December
Week 51 in 168 December 19, 168 December 25, 168 December
Week 52 in 168 December 26, 168 January 1, 169 December / January

Calendars 168

January 168
MoTuWeThFrSaSu
Week 53123
Week 145678910
Week 211121314151617
Week 318192021222324
Week 425262728293031
February 168
MoTuWeThFrSaSu
Week 51234567
Week 6891011121314
Week 715161718192021
Week 822232425262728
Week 929
March 168
MoTuWeThFrSaSu
Week 9123456
Week 1078910111213
Week 1114151617181920
Week 1221222324252627
Week 1328293031
April 168
MoTuWeThFrSaSu
Week 13123
Week 1445678910
Week 1511121314151617
Week 1618192021222324
Week 17252627282930
May 168
MoTuWeThFrSaSu
Week 171
Week 182345678
Week 199101112131415
Week 2016171819202122
Week 2123242526272829
Week 223031
June 168
MoTuWeThFrSaSu
Week 2212345
Week 236789101112
Week 2413141516171819
Week 2520212223242526
Week 2627282930
July 168
MoTuWeThFrSaSu
Week 26123
Week 2745678910
Week 2811121314151617
Week 2918192021222324
Week 3025262728293031
August 168
MoTuWeThFrSaSu
Week 311234567
Week 32891011121314
Week 3315161718192021
Week 3422232425262728
Week 35293031
September 168
MoTuWeThFrSaSu
Week 351234
Week 36567891011
Week 3712131415161718
Week 3819202122232425
Week 392627282930
October 168
MoTuWeThFrSaSu
Week 3912
Week 403456789
Week 4110111213141516
Week 4217181920212223
Week 4324252627282930
Week 4431
November 168
MoTuWeThFrSaSu
Week 44123456
Week 4578910111213
Week 4614151617181920
Week 4721222324252627
Week 48282930
December 168
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 168 starts on January 4, 168 and ends on January 10, 168 (ISO 8601, Monday to Sunday). 168 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 168 have?

168 has 52 ISO weeks.

When does week 1 of 168 start?

Week 1 of 168 starts on January 4, 168 and ends on January 10, 168 (ISO 8601, Monday to Sunday).

When does the last week of 168 end?

Week 52 of 168 starts on December 26, 168 and ends on January 1, 169 (ISO 8601, Monday to Sunday).

Which years have 53 weeks?

The next years with 53 ISO weeks are 172, 178, 184, 189, 195.

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.