Week numbers 149

149 has 52 ISO weeks. Week 1: Dec 30, 148 – Jan 5, 149 · Week 52: Dec 22 – 28

149 at a glance

Weeks in 14952
Week 1December 30, 148 – January 5, 149
Week 52December 22, 149 – December 28, 149
Days in 149365
Leap yearNo

All Weeks in 149

Week From To Month
Week 1 in 149 December 30, 148 January 5, 149 December / January
Week 2 in 149 January 6, 149 January 12, 149 January
Week 3 in 149 January 13, 149 January 19, 149 January
Week 4 in 149 January 20, 149 January 26, 149 January
Week 5 in 149 January 27, 149 February 2, 149 January / February
Week 6 in 149 February 3, 149 February 9, 149 February
Week 7 in 149 February 10, 149 February 16, 149 February
Week 8 in 149 February 17, 149 February 23, 149 February
Week 9 in 149 February 24, 149 March 2, 149 February / March
Week 10 in 149 March 3, 149 March 9, 149 March
Week 11 in 149 March 10, 149 March 16, 149 March
Week 12 in 149 March 17, 149 March 23, 149 March
Week 13 in 149 March 24, 149 March 30, 149 March
Week 14 in 149 March 31, 149 April 6, 149 March / April
Week 15 in 149 April 7, 149 April 13, 149 April
Week 16 in 149 April 14, 149 April 20, 149 April
Week 17 in 149 April 21, 149 April 27, 149 April
Week 18 in 149 April 28, 149 May 4, 149 April / May
Week 19 in 149 May 5, 149 May 11, 149 May
Week 20 in 149 May 12, 149 May 18, 149 May
Week 21 in 149 May 19, 149 May 25, 149 May
Week 22 in 149 May 26, 149 June 1, 149 May / June
Week 23 in 149 June 2, 149 June 8, 149 June
Week 24 in 149 June 9, 149 June 15, 149 June
Week 25 in 149 June 16, 149 June 22, 149 June
Week 26 in 149 June 23, 149 June 29, 149 June
Week 27 in 149 June 30, 149 July 6, 149 June / July
Week 28 in 149 July 7, 149 July 13, 149 July
Week 29 in 149 July 14, 149 July 20, 149 July
Week 30 in 149 July 21, 149 July 27, 149 July
Week 31 in 149 July 28, 149 August 3, 149 July / August
Week 32 in 149 August 4, 149 August 10, 149 August
Week 33 in 149 August 11, 149 August 17, 149 August
Week 34 in 149 August 18, 149 August 24, 149 August
Week 35 in 149 August 25, 149 August 31, 149 August
Week 36 in 149 September 1, 149 September 7, 149 September
Week 37 in 149 September 8, 149 September 14, 149 September
Week 38 in 149 September 15, 149 September 21, 149 September
Week 39 in 149 September 22, 149 September 28, 149 September
Week 40 in 149 September 29, 149 October 5, 149 September / October
Week 41 in 149 October 6, 149 October 12, 149 October
Week 42 in 149 October 13, 149 October 19, 149 October
Week 43 in 149 October 20, 149 October 26, 149 October
Week 44 in 149 October 27, 149 November 2, 149 October / November
Week 45 in 149 November 3, 149 November 9, 149 November
Week 46 in 149 November 10, 149 November 16, 149 November
Week 47 in 149 November 17, 149 November 23, 149 November
Week 48 in 149 November 24, 149 November 30, 149 November
Week 49 in 149 December 1, 149 December 7, 149 December
Week 50 in 149 December 8, 149 December 14, 149 December
Week 51 in 149 December 15, 149 December 21, 149 December
Week 52 in 149 December 22, 149 December 28, 149 December

Calendars 149

January 149
MoTuWeThFrSaSu
Week 112345
Week 26789101112
Week 313141516171819
Week 420212223242526
Week 52728293031
February 149
MoTuWeThFrSaSu
Week 512
Week 63456789
Week 710111213141516
Week 817181920212223
Week 92425262728
March 149
MoTuWeThFrSaSu
Week 912
Week 103456789
Week 1110111213141516
Week 1217181920212223
Week 1324252627282930
Week 1431
April 149
MoTuWeThFrSaSu
Week 14123456
Week 1578910111213
Week 1614151617181920
Week 1721222324252627
Week 18282930
May 149
MoTuWeThFrSaSu
Week 181234
Week 19567891011
Week 2012131415161718
Week 2119202122232425
Week 22262728293031
June 149
MoTuWeThFrSaSu
Week 221
Week 232345678
Week 249101112131415
Week 2516171819202122
Week 2623242526272829
Week 2730
July 149
MoTuWeThFrSaSu
Week 27123456
Week 2878910111213
Week 2914151617181920
Week 3021222324252627
Week 3128293031
August 149
MoTuWeThFrSaSu
Week 31123
Week 3245678910
Week 3311121314151617
Week 3418192021222324
Week 3525262728293031
September 149
MoTuWeThFrSaSu
Week 361234567
Week 37891011121314
Week 3815161718192021
Week 3922232425262728
Week 402930
October 149
MoTuWeThFrSaSu
Week 4012345
Week 416789101112
Week 4213141516171819
Week 4320212223242526
Week 442728293031
November 149
MoTuWeThFrSaSu
Week 4412
Week 453456789
Week 4610111213141516
Week 4717181920212223
Week 4824252627282930
December 149
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 149 starts on December 30, 148 and ends on January 5, 149 (ISO 8601, Monday to Sunday). 149 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 149 have?

149 has 52 ISO weeks.

When does week 1 of 149 start?

Week 1 of 149 starts on December 30, 148 and ends on January 5, 149 (ISO 8601, Monday to Sunday).

When does the last week of 149 end?

Week 52 of 149 starts on December 22, 149 and ends on December 28, 149 (ISO 8601, Monday to Sunday).

Which years have 53 weeks?

The next years with 53 ISO weeks are 150, 156, 161, 167, 172.

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.