Week numbers 679

679 has 52 ISO weeks. Week 1: Dec 30, 678 – Jan 5, 679 · Week 52: Dec 22 – 28

679 at a glance

Weeks in 67952
Week 1December 30, 678 – January 5, 679
Week 52December 22, 679 – December 28, 679
Days in 679365
Leap yearNo

All Weeks in 679

Week From To Month
Week 1 in 679 December 30, 678 January 5, 679 December / January
Week 2 in 679 January 6, 679 January 12, 679 January
Week 3 in 679 January 13, 679 January 19, 679 January
Week 4 in 679 January 20, 679 January 26, 679 January
Week 5 in 679 January 27, 679 February 2, 679 January / February
Week 6 in 679 February 3, 679 February 9, 679 February
Week 7 in 679 February 10, 679 February 16, 679 February
Week 8 in 679 February 17, 679 February 23, 679 February
Week 9 in 679 February 24, 679 March 2, 679 February / March
Week 10 in 679 March 3, 679 March 9, 679 March
Week 11 in 679 March 10, 679 March 16, 679 March
Week 12 in 679 March 17, 679 March 23, 679 March
Week 13 in 679 March 24, 679 March 30, 679 March
Week 14 in 679 March 31, 679 April 6, 679 March / April
Week 15 in 679 April 7, 679 April 13, 679 April
Week 16 in 679 April 14, 679 April 20, 679 April
Week 17 in 679 April 21, 679 April 27, 679 April
Week 18 in 679 April 28, 679 May 4, 679 April / May
Week 19 in 679 May 5, 679 May 11, 679 May
Week 20 in 679 May 12, 679 May 18, 679 May
Week 21 in 679 May 19, 679 May 25, 679 May
Week 22 in 679 May 26, 679 June 1, 679 May / June
Week 23 in 679 June 2, 679 June 8, 679 June
Week 24 in 679 June 9, 679 June 15, 679 June
Week 25 in 679 June 16, 679 June 22, 679 June
Week 26 in 679 June 23, 679 June 29, 679 June
Week 27 in 679 June 30, 679 July 6, 679 June / July
Week 28 in 679 July 7, 679 July 13, 679 July
Week 29 in 679 July 14, 679 July 20, 679 July
Week 30 in 679 July 21, 679 July 27, 679 July
Week 31 in 679 July 28, 679 August 3, 679 July / August
Week 32 in 679 August 4, 679 August 10, 679 August
Week 33 in 679 August 11, 679 August 17, 679 August
Week 34 in 679 August 18, 679 August 24, 679 August
Week 35 in 679 August 25, 679 August 31, 679 August
Week 36 in 679 September 1, 679 September 7, 679 September
Week 37 in 679 September 8, 679 September 14, 679 September
Week 38 in 679 September 15, 679 September 21, 679 September
Week 39 in 679 September 22, 679 September 28, 679 September
Week 40 in 679 September 29, 679 October 5, 679 September / October
Week 41 in 679 October 6, 679 October 12, 679 October
Week 42 in 679 October 13, 679 October 19, 679 October
Week 43 in 679 October 20, 679 October 26, 679 October
Week 44 in 679 October 27, 679 November 2, 679 October / November
Week 45 in 679 November 3, 679 November 9, 679 November
Week 46 in 679 November 10, 679 November 16, 679 November
Week 47 in 679 November 17, 679 November 23, 679 November
Week 48 in 679 November 24, 679 November 30, 679 November
Week 49 in 679 December 1, 679 December 7, 679 December
Week 50 in 679 December 8, 679 December 14, 679 December
Week 51 in 679 December 15, 679 December 21, 679 December
Week 52 in 679 December 22, 679 December 28, 679 December

Calendars 679

January 679
MoTuWeThFrSaSu
Week 112345
Week 26789101112
Week 313141516171819
Week 420212223242526
Week 52728293031
February 679
MoTuWeThFrSaSu
Week 512
Week 63456789
Week 710111213141516
Week 817181920212223
Week 92425262728
March 679
MoTuWeThFrSaSu
Week 912
Week 103456789
Week 1110111213141516
Week 1217181920212223
Week 1324252627282930
Week 1431
April 679
MoTuWeThFrSaSu
Week 14123456
Week 1578910111213
Week 1614151617181920
Week 1721222324252627
Week 18282930
May 679
MoTuWeThFrSaSu
Week 181234
Week 19567891011
Week 2012131415161718
Week 2119202122232425
Week 22262728293031
June 679
MoTuWeThFrSaSu
Week 221
Week 232345678
Week 249101112131415
Week 2516171819202122
Week 2623242526272829
Week 2730
July 679
MoTuWeThFrSaSu
Week 27123456
Week 2878910111213
Week 2914151617181920
Week 3021222324252627
Week 3128293031
August 679
MoTuWeThFrSaSu
Week 31123
Week 3245678910
Week 3311121314151617
Week 3418192021222324
Week 3525262728293031
September 679
MoTuWeThFrSaSu
Week 361234567
Week 37891011121314
Week 3815161718192021
Week 3922232425262728
Week 402930
October 679
MoTuWeThFrSaSu
Week 4012345
Week 416789101112
Week 4213141516171819
Week 4320212223242526
Week 442728293031
November 679
MoTuWeThFrSaSu
Week 4412
Week 453456789
Week 4610111213141516
Week 4717181920212223
Week 4824252627282930
December 679
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 679 starts on December 30, 678 and ends on January 5, 679 (ISO 8601, Monday to Sunday). 679 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 679 have?

679 has 52 ISO weeks.

When does week 1 of 679 start?

Week 1 of 679 starts on December 30, 678 and ends on January 5, 679 (ISO 8601, Monday to Sunday).

When does the last week of 679 end?

Week 52 of 679 starts on December 22, 679 and ends on December 28, 679 (ISO 8601, Monday to Sunday).

Which years have 53 weeks?

The next years with 53 ISO weeks are 680, 685, 691, 696, 703.

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.