Week numbers 8518

8518 has 52 ISO weeks. Week 1: Jan 3 – 9 · Week 52: Dec 26, 8518 – Jan 1, 8519

8518 at a glance

Weeks in 851852
Week 1January 3, 8518 – January 9, 8518
Week 52December 26, 8518 – January 1, 8519
Days in 8518365
Leap yearNo

All Weeks in 8518

Week From To Month
Week 1 in 8518 January 3, 8518 January 9, 8518 January
Week 2 in 8518 January 10, 8518 January 16, 8518 January
Week 3 in 8518 January 17, 8518 January 23, 8518 January
Week 4 in 8518 January 24, 8518 January 30, 8518 January
Week 5 in 8518 January 31, 8518 February 6, 8518 January / February
Week 6 in 8518 February 7, 8518 February 13, 8518 February
Week 7 in 8518 February 14, 8518 February 20, 8518 February
Week 8 in 8518 February 21, 8518 February 27, 8518 February
Week 9 in 8518 February 28, 8518 March 6, 8518 February / March
Week 10 in 8518 March 7, 8518 March 13, 8518 March
Week 11 in 8518 March 14, 8518 March 20, 8518 March
Week 12 in 8518 March 21, 8518 March 27, 8518 March
Week 13 in 8518 March 28, 8518 April 3, 8518 March / April
Week 14 in 8518 April 4, 8518 April 10, 8518 April
Week 15 in 8518 April 11, 8518 April 17, 8518 April
Week 16 in 8518 April 18, 8518 April 24, 8518 April
Week 17 in 8518 April 25, 8518 May 1, 8518 April / May
Week 18 in 8518 May 2, 8518 May 8, 8518 May
Week 19 in 8518 May 9, 8518 May 15, 8518 May
Week 20 in 8518 May 16, 8518 May 22, 8518 May
Week 21 in 8518 May 23, 8518 May 29, 8518 May
Week 22 in 8518 May 30, 8518 June 5, 8518 May / June
Week 23 in 8518 June 6, 8518 June 12, 8518 June
Week 24 in 8518 June 13, 8518 June 19, 8518 June
Week 25 in 8518 June 20, 8518 June 26, 8518 June
Week 26 in 8518 June 27, 8518 July 3, 8518 June / July
Week 27 in 8518 July 4, 8518 July 10, 8518 July
Week 28 in 8518 July 11, 8518 July 17, 8518 July
Week 29 in 8518 July 18, 8518 July 24, 8518 July
Week 30 in 8518 July 25, 8518 July 31, 8518 July
Week 31 in 8518 August 1, 8518 August 7, 8518 August
Week 32 in 8518 August 8, 8518 August 14, 8518 August
Week 33 in 8518 August 15, 8518 August 21, 8518 August
Week 34 in 8518 August 22, 8518 August 28, 8518 August
Week 35 in 8518 August 29, 8518 September 4, 8518 August / September
Week 36 in 8518 September 5, 8518 September 11, 8518 September
Week 37 in 8518 September 12, 8518 September 18, 8518 September
Week 38 in 8518 September 19, 8518 September 25, 8518 September
Week 39 in 8518 September 26, 8518 October 2, 8518 September / October
Week 40 in 8518 October 3, 8518 October 9, 8518 October
Week 41 in 8518 October 10, 8518 October 16, 8518 October
Week 42 in 8518 October 17, 8518 October 23, 8518 October
Week 43 in 8518 October 24, 8518 October 30, 8518 October
Week 44 in 8518 October 31, 8518 November 6, 8518 October / November
Week 45 in 8518 November 7, 8518 November 13, 8518 November
Week 46 in 8518 November 14, 8518 November 20, 8518 November
Week 47 in 8518 November 21, 8518 November 27, 8518 November
Week 48 in 8518 November 28, 8518 December 4, 8518 November / December
Week 49 in 8518 December 5, 8518 December 11, 8518 December
Week 50 in 8518 December 12, 8518 December 18, 8518 December
Week 51 in 8518 December 19, 8518 December 25, 8518 December
Week 52 in 8518 December 26, 8518 January 1, 8519 December / January

Calendars 8518

January 8518
MoTuWeThFrSaSu
Week 5212
Week 13456789
Week 210111213141516
Week 317181920212223
Week 424252627282930
Week 531
February 8518
MoTuWeThFrSaSu
Week 5123456
Week 678910111213
Week 714151617181920
Week 821222324252627
Week 928
March 8518
MoTuWeThFrSaSu
Week 9123456
Week 1078910111213
Week 1114151617181920
Week 1221222324252627
Week 1328293031
April 8518
MoTuWeThFrSaSu
Week 13123
Week 1445678910
Week 1511121314151617
Week 1618192021222324
Week 17252627282930
May 8518
MoTuWeThFrSaSu
Week 171
Week 182345678
Week 199101112131415
Week 2016171819202122
Week 2123242526272829
Week 223031
June 8518
MoTuWeThFrSaSu
Week 2212345
Week 236789101112
Week 2413141516171819
Week 2520212223242526
Week 2627282930
July 8518
MoTuWeThFrSaSu
Week 26123
Week 2745678910
Week 2811121314151617
Week 2918192021222324
Week 3025262728293031
August 8518
MoTuWeThFrSaSu
Week 311234567
Week 32891011121314
Week 3315161718192021
Week 3422232425262728
Week 35293031
September 8518
MoTuWeThFrSaSu
Week 351234
Week 36567891011
Week 3712131415161718
Week 3819202122232425
Week 392627282930
October 8518
MoTuWeThFrSaSu
Week 3912
Week 403456789
Week 4110111213141516
Week 4217181920212223
Week 4324252627282930
Week 4431
November 8518
MoTuWeThFrSaSu
Week 44123456
Week 4578910111213
Week 4614151617181920
Week 4721222324252627
Week 48282930
December 8518
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 8518 starts on January 3, 8518 and ends on January 9, 8518 (ISO 8601, Monday to Sunday). 8518 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 8518 have?

8518 has 52 ISO weeks.

When does week 1 of 8518 start?

Week 1 of 8518 starts on January 3, 8518 and ends on January 9, 8518 (ISO 8601, Monday to Sunday).

When does the last week of 8518 end?

Week 52 of 8518 starts on December 26, 8518 and ends on January 1, 8519 (ISO 8601, Monday to Sunday).

Which years have 53 weeks?

The next years with 53 ISO weeks are 8522, 8528, 8533, 8539, 8544.

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.