Week numbers 154

154 has 52 ISO weeks. Week 1: Dec 31, 153 – Jan 6, 154 · Week 52: Dec 23 – 29

154 at a glance

Weeks in 15452
Week 1December 31, 153 – January 6, 154
Week 52December 23, 154 – December 29, 154
Days in 154365
Leap yearNo

All Weeks in 154

Week From To Month
Week 1 in 154 December 31, 153 January 6, 154 December / January
Week 2 in 154 January 7, 154 January 13, 154 January
Week 3 in 154 January 14, 154 January 20, 154 January
Week 4 in 154 January 21, 154 January 27, 154 January
Week 5 in 154 January 28, 154 February 3, 154 January / February
Week 6 in 154 February 4, 154 February 10, 154 February
Week 7 in 154 February 11, 154 February 17, 154 February
Week 8 in 154 February 18, 154 February 24, 154 February
Week 9 in 154 February 25, 154 March 3, 154 February / March
Week 10 in 154 March 4, 154 March 10, 154 March
Week 11 in 154 March 11, 154 March 17, 154 March
Week 12 in 154 March 18, 154 March 24, 154 March
Week 13 in 154 March 25, 154 March 31, 154 March
Week 14 in 154 April 1, 154 April 7, 154 April
Week 15 in 154 April 8, 154 April 14, 154 April
Week 16 in 154 April 15, 154 April 21, 154 April
Week 17 in 154 April 22, 154 April 28, 154 April
Week 18 in 154 April 29, 154 May 5, 154 April / May
Week 19 in 154 May 6, 154 May 12, 154 May
Week 20 in 154 May 13, 154 May 19, 154 May
Week 21 in 154 May 20, 154 May 26, 154 May
Week 22 in 154 May 27, 154 June 2, 154 May / June
Week 23 in 154 June 3, 154 June 9, 154 June
Week 24 in 154 June 10, 154 June 16, 154 June
Week 25 in 154 June 17, 154 June 23, 154 June
Week 26 in 154 June 24, 154 June 30, 154 June
Week 27 in 154 July 1, 154 July 7, 154 July
Week 28 in 154 July 8, 154 July 14, 154 July
Week 29 in 154 July 15, 154 July 21, 154 July
Week 30 in 154 July 22, 154 July 28, 154 July
Week 31 in 154 July 29, 154 August 4, 154 July / August
Week 32 in 154 August 5, 154 August 11, 154 August
Week 33 in 154 August 12, 154 August 18, 154 August
Week 34 in 154 August 19, 154 August 25, 154 August
Week 35 in 154 August 26, 154 September 1, 154 August / September
Week 36 in 154 September 2, 154 September 8, 154 September
Week 37 in 154 September 9, 154 September 15, 154 September
Week 38 in 154 September 16, 154 September 22, 154 September
Week 39 in 154 September 23, 154 September 29, 154 September
Week 40 in 154 September 30, 154 October 6, 154 September / October
Week 41 in 154 October 7, 154 October 13, 154 October
Week 42 in 154 October 14, 154 October 20, 154 October
Week 43 in 154 October 21, 154 October 27, 154 October
Week 44 in 154 October 28, 154 November 3, 154 October / November
Week 45 in 154 November 4, 154 November 10, 154 November
Week 46 in 154 November 11, 154 November 17, 154 November
Week 47 in 154 November 18, 154 November 24, 154 November
Week 48 in 154 November 25, 154 December 1, 154 November / December
Week 49 in 154 December 2, 154 December 8, 154 December
Week 50 in 154 December 9, 154 December 15, 154 December
Week 51 in 154 December 16, 154 December 22, 154 December
Week 52 in 154 December 23, 154 December 29, 154 December

Calendars 154

January 154
MoTuWeThFrSaSu
Week 1123456
Week 278910111213
Week 314151617181920
Week 421222324252627
Week 528293031
February 154
MoTuWeThFrSaSu
Week 5123
Week 645678910
Week 711121314151617
Week 818192021222324
Week 925262728
March 154
MoTuWeThFrSaSu
Week 9123
Week 1045678910
Week 1111121314151617
Week 1218192021222324
Week 1325262728293031
April 154
MoTuWeThFrSaSu
Week 141234567
Week 15891011121314
Week 1615161718192021
Week 1722232425262728
Week 182930
May 154
MoTuWeThFrSaSu
Week 1812345
Week 196789101112
Week 2013141516171819
Week 2120212223242526
Week 222728293031
June 154
MoTuWeThFrSaSu
Week 2212
Week 233456789
Week 2410111213141516
Week 2517181920212223
Week 2624252627282930
July 154
MoTuWeThFrSaSu
Week 271234567
Week 28891011121314
Week 2915161718192021
Week 3022232425262728
Week 31293031
August 154
MoTuWeThFrSaSu
Week 311234
Week 32567891011
Week 3312131415161718
Week 3419202122232425
Week 35262728293031
September 154
MoTuWeThFrSaSu
Week 351
Week 362345678
Week 379101112131415
Week 3816171819202122
Week 3923242526272829
Week 4030
October 154
MoTuWeThFrSaSu
Week 40123456
Week 4178910111213
Week 4214151617181920
Week 4321222324252627
Week 4428293031
November 154
MoTuWeThFrSaSu
Week 44123
Week 4545678910
Week 4611121314151617
Week 4718192021222324
Week 48252627282930
December 154
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 154 starts on December 31, 153 and ends on January 6, 154 (ISO 8601, Monday to Sunday). 154 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 154 have?

154 has 52 ISO weeks.

When does week 1 of 154 start?

Week 1 of 154 starts on December 31, 153 and ends on January 6, 154 (ISO 8601, Monday to Sunday).

When does the last week of 154 end?

Week 52 of 154 starts on December 23, 154 and ends on December 29, 154 (ISO 8601, Monday to Sunday).

Which years have 53 weeks?

The next years with 53 ISO weeks are 156, 161, 167, 172, 178.

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.