Week numbers 5109

5109 has 52 ISO weeks. Week 1: Jan 4 – 10 · Week 52: Dec 27, 5109 – Jan 2, 5110

5109 at a glance

Weeks in 510952
Week 1January 4, 5109 – January 10, 5109
Week 52December 27, 5109 – January 2, 5110
Days in 5109365
Leap yearNo

All Weeks in 5109

Week From To Month
Week 1 in 5109 January 4, 5109 January 10, 5109 January
Week 2 in 5109 January 11, 5109 January 17, 5109 January
Week 3 in 5109 January 18, 5109 January 24, 5109 January
Week 4 in 5109 January 25, 5109 January 31, 5109 January
Week 5 in 5109 February 1, 5109 February 7, 5109 February
Week 6 in 5109 February 8, 5109 February 14, 5109 February
Week 7 in 5109 February 15, 5109 February 21, 5109 February
Week 8 in 5109 February 22, 5109 February 28, 5109 February
Week 9 in 5109 March 1, 5109 March 7, 5109 March
Week 10 in 5109 March 8, 5109 March 14, 5109 March
Week 11 in 5109 March 15, 5109 March 21, 5109 March
Week 12 in 5109 March 22, 5109 March 28, 5109 March
Week 13 in 5109 March 29, 5109 April 4, 5109 March / April
Week 14 in 5109 April 5, 5109 April 11, 5109 April
Week 15 in 5109 April 12, 5109 April 18, 5109 April
Week 16 in 5109 April 19, 5109 April 25, 5109 April
Week 17 in 5109 April 26, 5109 May 2, 5109 April / May
Week 18 in 5109 May 3, 5109 May 9, 5109 May
Week 19 in 5109 May 10, 5109 May 16, 5109 May
Week 20 in 5109 May 17, 5109 May 23, 5109 May
Week 21 in 5109 May 24, 5109 May 30, 5109 May
Week 22 in 5109 May 31, 5109 June 6, 5109 May / June
Week 23 in 5109 June 7, 5109 June 13, 5109 June
Week 24 in 5109 June 14, 5109 June 20, 5109 June
Week 25 in 5109 June 21, 5109 June 27, 5109 June
Week 26 in 5109 June 28, 5109 July 4, 5109 June / July
Week 27 in 5109 July 5, 5109 July 11, 5109 July
Week 28 in 5109 July 12, 5109 July 18, 5109 July
Week 29 in 5109 July 19, 5109 July 25, 5109 July
Week 30 in 5109 July 26, 5109 August 1, 5109 July / August
Week 31 in 5109 August 2, 5109 August 8, 5109 August
Week 32 in 5109 August 9, 5109 August 15, 5109 August
Week 33 in 5109 August 16, 5109 August 22, 5109 August
Week 34 in 5109 August 23, 5109 August 29, 5109 August
Week 35 in 5109 August 30, 5109 September 5, 5109 August / September
Week 36 in 5109 September 6, 5109 September 12, 5109 September
Week 37 in 5109 September 13, 5109 September 19, 5109 September
Week 38 in 5109 September 20, 5109 September 26, 5109 September
Week 39 in 5109 September 27, 5109 October 3, 5109 September / October
Week 40 in 5109 October 4, 5109 October 10, 5109 October
Week 41 in 5109 October 11, 5109 October 17, 5109 October
Week 42 in 5109 October 18, 5109 October 24, 5109 October
Week 43 in 5109 October 25, 5109 October 31, 5109 October
Week 44 in 5109 November 1, 5109 November 7, 5109 November
Week 45 in 5109 November 8, 5109 November 14, 5109 November
Week 46 in 5109 November 15, 5109 November 21, 5109 November
Week 47 in 5109 November 22, 5109 November 28, 5109 November
Week 48 in 5109 November 29, 5109 December 5, 5109 November / December
Week 49 in 5109 December 6, 5109 December 12, 5109 December
Week 50 in 5109 December 13, 5109 December 19, 5109 December
Week 51 in 5109 December 20, 5109 December 26, 5109 December
Week 52 in 5109 December 27, 5109 January 2, 5110 December / January

Calendars 5109

January 5109
MoTuWeThFrSaSu
Week 53123
Week 145678910
Week 211121314151617
Week 318192021222324
Week 425262728293031
February 5109
MoTuWeThFrSaSu
Week 51234567
Week 6891011121314
Week 715161718192021
Week 822232425262728
March 5109
MoTuWeThFrSaSu
Week 91234567
Week 10891011121314
Week 1115161718192021
Week 1222232425262728
Week 13293031
April 5109
MoTuWeThFrSaSu
Week 131234
Week 14567891011
Week 1512131415161718
Week 1619202122232425
Week 172627282930
May 5109
MoTuWeThFrSaSu
Week 1712
Week 183456789
Week 1910111213141516
Week 2017181920212223
Week 2124252627282930
Week 2231
June 5109
MoTuWeThFrSaSu
Week 22123456
Week 2378910111213
Week 2414151617181920
Week 2521222324252627
Week 26282930
July 5109
MoTuWeThFrSaSu
Week 261234
Week 27567891011
Week 2812131415161718
Week 2919202122232425
Week 30262728293031
August 5109
MoTuWeThFrSaSu
Week 301
Week 312345678
Week 329101112131415
Week 3316171819202122
Week 3423242526272829
Week 353031
September 5109
MoTuWeThFrSaSu
Week 3512345
Week 366789101112
Week 3713141516171819
Week 3820212223242526
Week 3927282930
October 5109
MoTuWeThFrSaSu
Week 39123
Week 4045678910
Week 4111121314151617
Week 4218192021222324
Week 4325262728293031
November 5109
MoTuWeThFrSaSu
Week 441234567
Week 45891011121314
Week 4615161718192021
Week 4722232425262728
Week 482930
December 5109
MoTuWeThFrSaSu
Week 112345
Week 496789101112
Week 5013141516171819
Week 5120212223242526
Week 522728293031

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 5109 starts on January 4, 5109 and ends on January 10, 5109 (ISO 8601, Monday to Sunday). 5109 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 5109 have?

5109 has 52 ISO weeks.

When does week 1 of 5109 start?

Week 1 of 5109 starts on January 4, 5109 and ends on January 10, 5109 (ISO 8601, Monday to Sunday).

When does the last week of 5109 end?

Week 52 of 5109 starts on December 27, 5109 and ends on January 2, 5110 (ISO 8601, Monday to Sunday).

Which years have 53 weeks?

The next years with 53 ISO weeks are 5114, 5120, 5125, 5131, 5136.

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.