Week numbers 424

424 has 52 ISO weeks. Week 1: Jan 1 – 7 · Week 52: Dec 23 – 29

424 at a glance

Weeks in 42452
Week 1January 1, 424 – January 7, 424
Week 52December 23, 424 – December 29, 424
Days in 424366
Leap yearYes

All Weeks in 424

Week From To Month
Week 1 in 424 January 1, 424 January 7, 424 January
Week 2 in 424 January 8, 424 January 14, 424 January
Week 3 in 424 January 15, 424 January 21, 424 January
Week 4 in 424 January 22, 424 January 28, 424 January
Week 5 in 424 January 29, 424 February 4, 424 January / February
Week 6 in 424 February 5, 424 February 11, 424 February
Week 7 in 424 February 12, 424 February 18, 424 February
Week 8 in 424 February 19, 424 February 25, 424 February
Week 9 in 424 February 26, 424 March 3, 424 February / March
Week 10 in 424 March 4, 424 March 10, 424 March
Week 11 in 424 March 11, 424 March 17, 424 March
Week 12 in 424 March 18, 424 March 24, 424 March
Week 13 in 424 March 25, 424 March 31, 424 March
Week 14 in 424 April 1, 424 April 7, 424 April
Week 15 in 424 April 8, 424 April 14, 424 April
Week 16 in 424 April 15, 424 April 21, 424 April
Week 17 in 424 April 22, 424 April 28, 424 April
Week 18 in 424 April 29, 424 May 5, 424 April / May
Week 19 in 424 May 6, 424 May 12, 424 May
Week 20 in 424 May 13, 424 May 19, 424 May
Week 21 in 424 May 20, 424 May 26, 424 May
Week 22 in 424 May 27, 424 June 2, 424 May / June
Week 23 in 424 June 3, 424 June 9, 424 June
Week 24 in 424 June 10, 424 June 16, 424 June
Week 25 in 424 June 17, 424 June 23, 424 June
Week 26 in 424 June 24, 424 June 30, 424 June
Week 27 in 424 July 1, 424 July 7, 424 July
Week 28 in 424 July 8, 424 July 14, 424 July
Week 29 in 424 July 15, 424 July 21, 424 July
Week 30 in 424 July 22, 424 July 28, 424 July
Week 31 in 424 July 29, 424 August 4, 424 July / August
Week 32 in 424 August 5, 424 August 11, 424 August
Week 33 in 424 August 12, 424 August 18, 424 August
Week 34 in 424 August 19, 424 August 25, 424 August
Week 35 in 424 August 26, 424 September 1, 424 August / September
Week 36 in 424 September 2, 424 September 8, 424 September
Week 37 in 424 September 9, 424 September 15, 424 September
Week 38 in 424 September 16, 424 September 22, 424 September
Week 39 in 424 September 23, 424 September 29, 424 September
Week 40 in 424 September 30, 424 October 6, 424 September / October
Week 41 in 424 October 7, 424 October 13, 424 October
Week 42 in 424 October 14, 424 October 20, 424 October
Week 43 in 424 October 21, 424 October 27, 424 October
Week 44 in 424 October 28, 424 November 3, 424 October / November
Week 45 in 424 November 4, 424 November 10, 424 November
Week 46 in 424 November 11, 424 November 17, 424 November
Week 47 in 424 November 18, 424 November 24, 424 November
Week 48 in 424 November 25, 424 December 1, 424 November / December
Week 49 in 424 December 2, 424 December 8, 424 December
Week 50 in 424 December 9, 424 December 15, 424 December
Week 51 in 424 December 16, 424 December 22, 424 December
Week 52 in 424 December 23, 424 December 29, 424 December

Calendars 424

January 424
MoTuWeThFrSaSu
Week 11234567
Week 2891011121314
Week 315161718192021
Week 422232425262728
Week 5293031
February 424
MoTuWeThFrSaSu
Week 51234
Week 6567891011
Week 712131415161718
Week 819202122232425
Week 926272829
March 424
MoTuWeThFrSaSu
Week 9123
Week 1045678910
Week 1111121314151617
Week 1218192021222324
Week 1325262728293031
April 424
MoTuWeThFrSaSu
Week 141234567
Week 15891011121314
Week 1615161718192021
Week 1722232425262728
Week 182930
May 424
MoTuWeThFrSaSu
Week 1812345
Week 196789101112
Week 2013141516171819
Week 2120212223242526
Week 222728293031
June 424
MoTuWeThFrSaSu
Week 2212
Week 233456789
Week 2410111213141516
Week 2517181920212223
Week 2624252627282930
July 424
MoTuWeThFrSaSu
Week 271234567
Week 28891011121314
Week 2915161718192021
Week 3022232425262728
Week 31293031
August 424
MoTuWeThFrSaSu
Week 311234
Week 32567891011
Week 3312131415161718
Week 3419202122232425
Week 35262728293031
September 424
MoTuWeThFrSaSu
Week 351
Week 362345678
Week 379101112131415
Week 3816171819202122
Week 3923242526272829
Week 4030
October 424
MoTuWeThFrSaSu
Week 40123456
Week 4178910111213
Week 4214151617181920
Week 4321222324252627
Week 4428293031
November 424
MoTuWeThFrSaSu
Week 44123
Week 4545678910
Week 4611121314151617
Week 4718192021222324
Week 48252627282930
December 424
MoTuWeThFrSaSu
Week 21
Week 492345678
Week 509101112131415
Week 5116171819202122
Week 5223242526272829
Week 13031

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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 424 starts on January 1, 424 and ends on January 7, 424 (ISO 8601, Monday to Sunday). 424 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 424 have?

424 has 52 ISO weeks.

When does week 1 of 424 start?

Week 1 of 424 starts on January 1, 424 and ends on January 7, 424 (ISO 8601, Monday to Sunday).

When does the last week of 424 end?

Week 52 of 424 starts on December 23, 424 and ends on December 29, 424 (ISO 8601, Monday to Sunday).

Which years have 53 weeks?

The next years with 53 ISO weeks are 426, 432, 437, 443, 448.

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.