Week numbers 339

339 has 52 ISO weeks. Week 1: Jan 2 – 8 · Week 52: Dec 25 – 31

339 at a glance

Weeks in 33952
Week 1January 2, 339 – January 8, 339
Week 52December 25, 339 – December 31, 339
Days in 339365
Leap yearNo

All Weeks in 339

Week From To Month
Week 1 in 339 January 2, 339 January 8, 339 January
Week 2 in 339 January 9, 339 January 15, 339 January
Week 3 in 339 January 16, 339 January 22, 339 January
Week 4 in 339 January 23, 339 January 29, 339 January
Week 5 in 339 January 30, 339 February 5, 339 January / February
Week 6 in 339 February 6, 339 February 12, 339 February
Week 7 in 339 February 13, 339 February 19, 339 February
Week 8 in 339 February 20, 339 February 26, 339 February
Week 9 in 339 February 27, 339 March 5, 339 February / March
Week 10 in 339 March 6, 339 March 12, 339 March
Week 11 in 339 March 13, 339 March 19, 339 March
Week 12 in 339 March 20, 339 March 26, 339 March
Week 13 in 339 March 27, 339 April 2, 339 March / April
Week 14 in 339 April 3, 339 April 9, 339 April
Week 15 in 339 April 10, 339 April 16, 339 April
Week 16 in 339 April 17, 339 April 23, 339 April
Week 17 in 339 April 24, 339 April 30, 339 April
Week 18 in 339 May 1, 339 May 7, 339 May
Week 19 in 339 May 8, 339 May 14, 339 May
Week 20 in 339 May 15, 339 May 21, 339 May
Week 21 in 339 May 22, 339 May 28, 339 May
Week 22 in 339 May 29, 339 June 4, 339 May / June
Week 23 in 339 June 5, 339 June 11, 339 June
Week 24 in 339 June 12, 339 June 18, 339 June
Week 25 in 339 June 19, 339 June 25, 339 June
Week 26 in 339 June 26, 339 July 2, 339 June / July
Week 27 in 339 July 3, 339 July 9, 339 July
Week 28 in 339 July 10, 339 July 16, 339 July
Week 29 in 339 July 17, 339 July 23, 339 July
Week 30 in 339 July 24, 339 July 30, 339 July
Week 31 in 339 July 31, 339 August 6, 339 July / August
Week 32 in 339 August 7, 339 August 13, 339 August
Week 33 in 339 August 14, 339 August 20, 339 August
Week 34 in 339 August 21, 339 August 27, 339 August
Week 35 in 339 August 28, 339 September 3, 339 August / September
Week 36 in 339 September 4, 339 September 10, 339 September
Week 37 in 339 September 11, 339 September 17, 339 September
Week 38 in 339 September 18, 339 September 24, 339 September
Week 39 in 339 September 25, 339 October 1, 339 September / October
Week 40 in 339 October 2, 339 October 8, 339 October
Week 41 in 339 October 9, 339 October 15, 339 October
Week 42 in 339 October 16, 339 October 22, 339 October
Week 43 in 339 October 23, 339 October 29, 339 October
Week 44 in 339 October 30, 339 November 5, 339 October / November
Week 45 in 339 November 6, 339 November 12, 339 November
Week 46 in 339 November 13, 339 November 19, 339 November
Week 47 in 339 November 20, 339 November 26, 339 November
Week 48 in 339 November 27, 339 December 3, 339 November / December
Week 49 in 339 December 4, 339 December 10, 339 December
Week 50 in 339 December 11, 339 December 17, 339 December
Week 51 in 339 December 18, 339 December 24, 339 December
Week 52 in 339 December 25, 339 December 31, 339 December

Calendars 339

January 339
MoTuWeThFrSaSu
Week 521
Week 12345678
Week 29101112131415
Week 316171819202122
Week 423242526272829
Week 53031
February 339
MoTuWeThFrSaSu
Week 512345
Week 66789101112
Week 713141516171819
Week 820212223242526
Week 92728
March 339
MoTuWeThFrSaSu
Week 912345
Week 106789101112
Week 1113141516171819
Week 1220212223242526
Week 132728293031
April 339
MoTuWeThFrSaSu
Week 1312
Week 143456789
Week 1510111213141516
Week 1617181920212223
Week 1724252627282930
May 339
MoTuWeThFrSaSu
Week 181234567
Week 19891011121314
Week 2015161718192021
Week 2122232425262728
Week 22293031
June 339
MoTuWeThFrSaSu
Week 221234
Week 23567891011
Week 2412131415161718
Week 2519202122232425
Week 262627282930
July 339
MoTuWeThFrSaSu
Week 2612
Week 273456789
Week 2810111213141516
Week 2917181920212223
Week 3024252627282930
Week 3131
August 339
MoTuWeThFrSaSu
Week 31123456
Week 3278910111213
Week 3314151617181920
Week 3421222324252627
Week 3528293031
September 339
MoTuWeThFrSaSu
Week 35123
Week 3645678910
Week 3711121314151617
Week 3818192021222324
Week 39252627282930
October 339
MoTuWeThFrSaSu
Week 391
Week 402345678
Week 419101112131415
Week 4216171819202122
Week 4323242526272829
Week 443031
November 339
MoTuWeThFrSaSu
Week 4412345
Week 456789101112
Week 4613141516171819
Week 4720212223242526
Week 4827282930
December 339
MoTuWeThFrSaSu
Week 1123
Week 4945678910
Week 5011121314151617
Week 5118192021222324
Week 5225262728293031

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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 339 starts on January 2, 339 and ends on January 8, 339 (ISO 8601, Monday to Sunday). 339 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 339 have?

339 has 52 ISO weeks.

When does week 1 of 339 start?

Week 1 of 339 starts on January 2, 339 and ends on January 8, 339 (ISO 8601, Monday to Sunday).

When does the last week of 339 end?

Week 52 of 339 starts on December 25, 339 and ends on December 31, 339 (ISO 8601, Monday to Sunday).

Which years have 53 weeks?

The next years with 53 ISO weeks are 342, 348, 353, 359, 364.

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.