Week numbers 609

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

609 at a glance

Weeks in 60952
Week 1January 2, 609 – January 8, 609
Week 52December 25, 609 – December 31, 609
Days in 609365
Leap yearNo

All Weeks in 609

Week From To Month
Week 1 in 609 January 2, 609 January 8, 609 January
Week 2 in 609 January 9, 609 January 15, 609 January
Week 3 in 609 January 16, 609 January 22, 609 January
Week 4 in 609 January 23, 609 January 29, 609 January
Week 5 in 609 January 30, 609 February 5, 609 January / February
Week 6 in 609 February 6, 609 February 12, 609 February
Week 7 in 609 February 13, 609 February 19, 609 February
Week 8 in 609 February 20, 609 February 26, 609 February
Week 9 in 609 February 27, 609 March 5, 609 February / March
Week 10 in 609 March 6, 609 March 12, 609 March
Week 11 in 609 March 13, 609 March 19, 609 March
Week 12 in 609 March 20, 609 March 26, 609 March
Week 13 in 609 March 27, 609 April 2, 609 March / April
Week 14 in 609 April 3, 609 April 9, 609 April
Week 15 in 609 April 10, 609 April 16, 609 April
Week 16 in 609 April 17, 609 April 23, 609 April
Week 17 in 609 April 24, 609 April 30, 609 April
Week 18 in 609 May 1, 609 May 7, 609 May
Week 19 in 609 May 8, 609 May 14, 609 May
Week 20 in 609 May 15, 609 May 21, 609 May
Week 21 in 609 May 22, 609 May 28, 609 May
Week 22 in 609 May 29, 609 June 4, 609 May / June
Week 23 in 609 June 5, 609 June 11, 609 June
Week 24 in 609 June 12, 609 June 18, 609 June
Week 25 in 609 June 19, 609 June 25, 609 June
Week 26 in 609 June 26, 609 July 2, 609 June / July
Week 27 in 609 July 3, 609 July 9, 609 July
Week 28 in 609 July 10, 609 July 16, 609 July
Week 29 in 609 July 17, 609 July 23, 609 July
Week 30 in 609 July 24, 609 July 30, 609 July
Week 31 in 609 July 31, 609 August 6, 609 July / August
Week 32 in 609 August 7, 609 August 13, 609 August
Week 33 in 609 August 14, 609 August 20, 609 August
Week 34 in 609 August 21, 609 August 27, 609 August
Week 35 in 609 August 28, 609 September 3, 609 August / September
Week 36 in 609 September 4, 609 September 10, 609 September
Week 37 in 609 September 11, 609 September 17, 609 September
Week 38 in 609 September 18, 609 September 24, 609 September
Week 39 in 609 September 25, 609 October 1, 609 September / October
Week 40 in 609 October 2, 609 October 8, 609 October
Week 41 in 609 October 9, 609 October 15, 609 October
Week 42 in 609 October 16, 609 October 22, 609 October
Week 43 in 609 October 23, 609 October 29, 609 October
Week 44 in 609 October 30, 609 November 5, 609 October / November
Week 45 in 609 November 6, 609 November 12, 609 November
Week 46 in 609 November 13, 609 November 19, 609 November
Week 47 in 609 November 20, 609 November 26, 609 November
Week 48 in 609 November 27, 609 December 3, 609 November / December
Week 49 in 609 December 4, 609 December 10, 609 December
Week 50 in 609 December 11, 609 December 17, 609 December
Week 51 in 609 December 18, 609 December 24, 609 December
Week 52 in 609 December 25, 609 December 31, 609 December

Calendars 609

January 609
MoTuWeThFrSaSu
Week 521
Week 12345678
Week 29101112131415
Week 316171819202122
Week 423242526272829
Week 53031
February 609
MoTuWeThFrSaSu
Week 512345
Week 66789101112
Week 713141516171819
Week 820212223242526
Week 92728
March 609
MoTuWeThFrSaSu
Week 912345
Week 106789101112
Week 1113141516171819
Week 1220212223242526
Week 132728293031
April 609
MoTuWeThFrSaSu
Week 1312
Week 143456789
Week 1510111213141516
Week 1617181920212223
Week 1724252627282930
May 609
MoTuWeThFrSaSu
Week 181234567
Week 19891011121314
Week 2015161718192021
Week 2122232425262728
Week 22293031
June 609
MoTuWeThFrSaSu
Week 221234
Week 23567891011
Week 2412131415161718
Week 2519202122232425
Week 262627282930
July 609
MoTuWeThFrSaSu
Week 2612
Week 273456789
Week 2810111213141516
Week 2917181920212223
Week 3024252627282930
Week 3131
August 609
MoTuWeThFrSaSu
Week 31123456
Week 3278910111213
Week 3314151617181920
Week 3421222324252627
Week 3528293031
September 609
MoTuWeThFrSaSu
Week 35123
Week 3645678910
Week 3711121314151617
Week 3818192021222324
Week 39252627282930
October 609
MoTuWeThFrSaSu
Week 391
Week 402345678
Week 419101112131415
Week 4216171819202122
Week 4323242526272829
Week 443031
November 609
MoTuWeThFrSaSu
Week 4412345
Week 456789101112
Week 4613141516171819
Week 4720212223242526
Week 4827282930
December 609
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 609 starts on January 2, 609 and ends on January 8, 609 (ISO 8601, Monday to Sunday). 609 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 609 have?

609 has 52 ISO weeks.

When does week 1 of 609 start?

Week 1 of 609 starts on January 2, 609 and ends on January 8, 609 (ISO 8601, Monday to Sunday).

When does the last week of 609 end?

Week 52 of 609 starts on December 25, 609 and ends on December 31, 609 (ISO 8601, Monday to Sunday).

Which years have 53 weeks?

The next years with 53 ISO weeks are 612, 618, 624, 629, 635.

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.