Week numbers 684

684 has 52 ISO weeks. Week 1: Dec 31, 683 – Jan 6, 684 · Week 52: Dec 22 – 28

684 at a glance

Weeks in 68452
Week 1December 31, 683 – January 6, 684
Week 52December 22, 684 – December 28, 684
Days in 684366
Leap yearYes

All Weeks in 684

Week From To Month
Week 1 in 684 December 31, 683 January 6, 684 December / January
Week 2 in 684 January 7, 684 January 13, 684 January
Week 3 in 684 January 14, 684 January 20, 684 January
Week 4 in 684 January 21, 684 January 27, 684 January
Week 5 in 684 January 28, 684 February 3, 684 January / February
Week 6 in 684 February 4, 684 February 10, 684 February
Week 7 in 684 February 11, 684 February 17, 684 February
Week 8 in 684 February 18, 684 February 24, 684 February
Week 9 in 684 February 25, 684 March 2, 684 February / March
Week 10 in 684 March 3, 684 March 9, 684 March
Week 11 in 684 March 10, 684 March 16, 684 March
Week 12 in 684 March 17, 684 March 23, 684 March
Week 13 in 684 March 24, 684 March 30, 684 March
Week 14 in 684 March 31, 684 April 6, 684 March / April
Week 15 in 684 April 7, 684 April 13, 684 April
Week 16 in 684 April 14, 684 April 20, 684 April
Week 17 in 684 April 21, 684 April 27, 684 April
Week 18 in 684 April 28, 684 May 4, 684 April / May
Week 19 in 684 May 5, 684 May 11, 684 May
Week 20 in 684 May 12, 684 May 18, 684 May
Week 21 in 684 May 19, 684 May 25, 684 May
Week 22 in 684 May 26, 684 June 1, 684 May / June
Week 23 in 684 June 2, 684 June 8, 684 June
Week 24 in 684 June 9, 684 June 15, 684 June
Week 25 in 684 June 16, 684 June 22, 684 June
Week 26 in 684 June 23, 684 June 29, 684 June
Week 27 in 684 June 30, 684 July 6, 684 June / July
Week 28 in 684 July 7, 684 July 13, 684 July
Week 29 in 684 July 14, 684 July 20, 684 July
Week 30 in 684 July 21, 684 July 27, 684 July
Week 31 in 684 July 28, 684 August 3, 684 July / August
Week 32 in 684 August 4, 684 August 10, 684 August
Week 33 in 684 August 11, 684 August 17, 684 August
Week 34 in 684 August 18, 684 August 24, 684 August
Week 35 in 684 August 25, 684 August 31, 684 August
Week 36 in 684 September 1, 684 September 7, 684 September
Week 37 in 684 September 8, 684 September 14, 684 September
Week 38 in 684 September 15, 684 September 21, 684 September
Week 39 in 684 September 22, 684 September 28, 684 September
Week 40 in 684 September 29, 684 October 5, 684 September / October
Week 41 in 684 October 6, 684 October 12, 684 October
Week 42 in 684 October 13, 684 October 19, 684 October
Week 43 in 684 October 20, 684 October 26, 684 October
Week 44 in 684 October 27, 684 November 2, 684 October / November
Week 45 in 684 November 3, 684 November 9, 684 November
Week 46 in 684 November 10, 684 November 16, 684 November
Week 47 in 684 November 17, 684 November 23, 684 November
Week 48 in 684 November 24, 684 November 30, 684 November
Week 49 in 684 December 1, 684 December 7, 684 December
Week 50 in 684 December 8, 684 December 14, 684 December
Week 51 in 684 December 15, 684 December 21, 684 December
Week 52 in 684 December 22, 684 December 28, 684 December

Calendars 684

January 684
MoTuWeThFrSaSu
Week 1123456
Week 278910111213
Week 314151617181920
Week 421222324252627
Week 528293031
February 684
MoTuWeThFrSaSu
Week 5123
Week 645678910
Week 711121314151617
Week 818192021222324
Week 92526272829
March 684
MoTuWeThFrSaSu
Week 912
Week 103456789
Week 1110111213141516
Week 1217181920212223
Week 1324252627282930
Week 1431
April 684
MoTuWeThFrSaSu
Week 14123456
Week 1578910111213
Week 1614151617181920
Week 1721222324252627
Week 18282930
May 684
MoTuWeThFrSaSu
Week 181234
Week 19567891011
Week 2012131415161718
Week 2119202122232425
Week 22262728293031
June 684
MoTuWeThFrSaSu
Week 221
Week 232345678
Week 249101112131415
Week 2516171819202122
Week 2623242526272829
Week 2730
July 684
MoTuWeThFrSaSu
Week 27123456
Week 2878910111213
Week 2914151617181920
Week 3021222324252627
Week 3128293031
August 684
MoTuWeThFrSaSu
Week 31123
Week 3245678910
Week 3311121314151617
Week 3418192021222324
Week 3525262728293031
September 684
MoTuWeThFrSaSu
Week 361234567
Week 37891011121314
Week 3815161718192021
Week 3922232425262728
Week 402930
October 684
MoTuWeThFrSaSu
Week 4012345
Week 416789101112
Week 4213141516171819
Week 4320212223242526
Week 442728293031
November 684
MoTuWeThFrSaSu
Week 4412
Week 453456789
Week 4610111213141516
Week 4717181920212223
Week 4824252627282930
December 684
MoTuWeThFrSaSu
Week 491234567
Week 50891011121314
Week 5115161718192021
Week 5222232425262728
Week 1293031

Download Calendar in printable A4 PDF

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 684 starts on December 31, 683 and ends on January 6, 684 (ISO 8601, Monday to Sunday). 684 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 684 have?

684 has 52 ISO weeks.

When does week 1 of 684 start?

Week 1 of 684 starts on December 31, 683 and ends on January 6, 684 (ISO 8601, Monday to Sunday).

When does the last week of 684 end?

Week 52 of 684 starts on December 22, 684 and ends on December 28, 684 (ISO 8601, Monday to Sunday).

Which years have 53 weeks?

The next years with 53 ISO weeks are 685, 691, 696, 703, 708.

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.