Week numbers 338

338 has 52 ISO weeks. Week 1: Jan 3 – 9 · Week 52: Dec 26, 338 – Jan 1, 339

338 at a glance

Weeks in 33852
Week 1January 3, 338 – January 9, 338
Week 52December 26, 338 – January 1, 339
Days in 338365
Leap yearNo

All Weeks in 338

Week From To Month
Week 1 in 338 January 3, 338 January 9, 338 January
Week 2 in 338 January 10, 338 January 16, 338 January
Week 3 in 338 January 17, 338 January 23, 338 January
Week 4 in 338 January 24, 338 January 30, 338 January
Week 5 in 338 January 31, 338 February 6, 338 January / February
Week 6 in 338 February 7, 338 February 13, 338 February
Week 7 in 338 February 14, 338 February 20, 338 February
Week 8 in 338 February 21, 338 February 27, 338 February
Week 9 in 338 February 28, 338 March 6, 338 February / March
Week 10 in 338 March 7, 338 March 13, 338 March
Week 11 in 338 March 14, 338 March 20, 338 March
Week 12 in 338 March 21, 338 March 27, 338 March
Week 13 in 338 March 28, 338 April 3, 338 March / April
Week 14 in 338 April 4, 338 April 10, 338 April
Week 15 in 338 April 11, 338 April 17, 338 April
Week 16 in 338 April 18, 338 April 24, 338 April
Week 17 in 338 April 25, 338 May 1, 338 April / May
Week 18 in 338 May 2, 338 May 8, 338 May
Week 19 in 338 May 9, 338 May 15, 338 May
Week 20 in 338 May 16, 338 May 22, 338 May
Week 21 in 338 May 23, 338 May 29, 338 May
Week 22 in 338 May 30, 338 June 5, 338 May / June
Week 23 in 338 June 6, 338 June 12, 338 June
Week 24 in 338 June 13, 338 June 19, 338 June
Week 25 in 338 June 20, 338 June 26, 338 June
Week 26 in 338 June 27, 338 July 3, 338 June / July
Week 27 in 338 July 4, 338 July 10, 338 July
Week 28 in 338 July 11, 338 July 17, 338 July
Week 29 in 338 July 18, 338 July 24, 338 July
Week 30 in 338 July 25, 338 July 31, 338 July
Week 31 in 338 August 1, 338 August 7, 338 August
Week 32 in 338 August 8, 338 August 14, 338 August
Week 33 in 338 August 15, 338 August 21, 338 August
Week 34 in 338 August 22, 338 August 28, 338 August
Week 35 in 338 August 29, 338 September 4, 338 August / September
Week 36 in 338 September 5, 338 September 11, 338 September
Week 37 in 338 September 12, 338 September 18, 338 September
Week 38 in 338 September 19, 338 September 25, 338 September
Week 39 in 338 September 26, 338 October 2, 338 September / October
Week 40 in 338 October 3, 338 October 9, 338 October
Week 41 in 338 October 10, 338 October 16, 338 October
Week 42 in 338 October 17, 338 October 23, 338 October
Week 43 in 338 October 24, 338 October 30, 338 October
Week 44 in 338 October 31, 338 November 6, 338 October / November
Week 45 in 338 November 7, 338 November 13, 338 November
Week 46 in 338 November 14, 338 November 20, 338 November
Week 47 in 338 November 21, 338 November 27, 338 November
Week 48 in 338 November 28, 338 December 4, 338 November / December
Week 49 in 338 December 5, 338 December 11, 338 December
Week 50 in 338 December 12, 338 December 18, 338 December
Week 51 in 338 December 19, 338 December 25, 338 December
Week 52 in 338 December 26, 338 January 1, 339 December / January

Calendars 338

January 338
MoTuWeThFrSaSu
Week 5212
Week 13456789
Week 210111213141516
Week 317181920212223
Week 424252627282930
Week 531
February 338
MoTuWeThFrSaSu
Week 5123456
Week 678910111213
Week 714151617181920
Week 821222324252627
Week 928
March 338
MoTuWeThFrSaSu
Week 9123456
Week 1078910111213
Week 1114151617181920
Week 1221222324252627
Week 1328293031
April 338
MoTuWeThFrSaSu
Week 13123
Week 1445678910
Week 1511121314151617
Week 1618192021222324
Week 17252627282930
May 338
MoTuWeThFrSaSu
Week 171
Week 182345678
Week 199101112131415
Week 2016171819202122
Week 2123242526272829
Week 223031
June 338
MoTuWeThFrSaSu
Week 2212345
Week 236789101112
Week 2413141516171819
Week 2520212223242526
Week 2627282930
July 338
MoTuWeThFrSaSu
Week 26123
Week 2745678910
Week 2811121314151617
Week 2918192021222324
Week 3025262728293031
August 338
MoTuWeThFrSaSu
Week 311234567
Week 32891011121314
Week 3315161718192021
Week 3422232425262728
Week 35293031
September 338
MoTuWeThFrSaSu
Week 351234
Week 36567891011
Week 3712131415161718
Week 3819202122232425
Week 392627282930
October 338
MoTuWeThFrSaSu
Week 3912
Week 403456789
Week 4110111213141516
Week 4217181920212223
Week 4324252627282930
Week 4431
November 338
MoTuWeThFrSaSu
Week 44123456
Week 4578910111213
Week 4614151617181920
Week 4721222324252627
Week 48282930
December 338
MoTuWeThFrSaSu
Week 11234
Week 49567891011
Week 5012131415161718
Week 5119202122232425
Week 52262728293031

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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 338 starts on January 3, 338 and ends on January 9, 338 (ISO 8601, Monday to Sunday). 338 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 338 have?

338 has 52 ISO weeks.

When does week 1 of 338 start?

Week 1 of 338 starts on January 3, 338 and ends on January 9, 338 (ISO 8601, Monday to Sunday).

When does the last week of 338 end?

Week 52 of 338 starts on December 26, 338 and ends on January 1, 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.