Week numbers 429

429 has 52 ISO weeks. Week 1: Jan 1 – 7 · Week 52: Dec 24 – 30

429 at a glance

Weeks in 42952
Week 1January 1, 429 – January 7, 429
Week 52December 24, 429 – December 30, 429
Days in 429365
Leap yearNo

All Weeks in 429

Week From To Month
Week 1 in 429 January 1, 429 January 7, 429 January
Week 2 in 429 January 8, 429 January 14, 429 January
Week 3 in 429 January 15, 429 January 21, 429 January
Week 4 in 429 January 22, 429 January 28, 429 January
Week 5 in 429 January 29, 429 February 4, 429 January / February
Week 6 in 429 February 5, 429 February 11, 429 February
Week 7 in 429 February 12, 429 February 18, 429 February
Week 8 in 429 February 19, 429 February 25, 429 February
Week 9 in 429 February 26, 429 March 4, 429 February / March
Week 10 in 429 March 5, 429 March 11, 429 March
Week 11 in 429 March 12, 429 March 18, 429 March
Week 12 in 429 March 19, 429 March 25, 429 March
Week 13 in 429 March 26, 429 April 1, 429 March / April
Week 14 in 429 April 2, 429 April 8, 429 April
Week 15 in 429 April 9, 429 April 15, 429 April
Week 16 in 429 April 16, 429 April 22, 429 April
Week 17 in 429 April 23, 429 April 29, 429 April
Week 18 in 429 April 30, 429 May 6, 429 April / May
Week 19 in 429 May 7, 429 May 13, 429 May
Week 20 in 429 May 14, 429 May 20, 429 May
Week 21 in 429 May 21, 429 May 27, 429 May
Week 22 in 429 May 28, 429 June 3, 429 May / June
Week 23 in 429 June 4, 429 June 10, 429 June
Week 24 in 429 June 11, 429 June 17, 429 June
Week 25 in 429 June 18, 429 June 24, 429 June
Week 26 in 429 June 25, 429 July 1, 429 June / July
Week 27 in 429 July 2, 429 July 8, 429 July
Week 28 in 429 July 9, 429 July 15, 429 July
Week 29 in 429 July 16, 429 July 22, 429 July
Week 30 in 429 July 23, 429 July 29, 429 July
Week 31 in 429 July 30, 429 August 5, 429 July / August
Week 32 in 429 August 6, 429 August 12, 429 August
Week 33 in 429 August 13, 429 August 19, 429 August
Week 34 in 429 August 20, 429 August 26, 429 August
Week 35 in 429 August 27, 429 September 2, 429 August / September
Week 36 in 429 September 3, 429 September 9, 429 September
Week 37 in 429 September 10, 429 September 16, 429 September
Week 38 in 429 September 17, 429 September 23, 429 September
Week 39 in 429 September 24, 429 September 30, 429 September
Week 40 in 429 October 1, 429 October 7, 429 October
Week 41 in 429 October 8, 429 October 14, 429 October
Week 42 in 429 October 15, 429 October 21, 429 October
Week 43 in 429 October 22, 429 October 28, 429 October
Week 44 in 429 October 29, 429 November 4, 429 October / November
Week 45 in 429 November 5, 429 November 11, 429 November
Week 46 in 429 November 12, 429 November 18, 429 November
Week 47 in 429 November 19, 429 November 25, 429 November
Week 48 in 429 November 26, 429 December 2, 429 November / December
Week 49 in 429 December 3, 429 December 9, 429 December
Week 50 in 429 December 10, 429 December 16, 429 December
Week 51 in 429 December 17, 429 December 23, 429 December
Week 52 in 429 December 24, 429 December 30, 429 December

Calendars 429

January 429
MoTuWeThFrSaSu
Week 11234567
Week 2891011121314
Week 315161718192021
Week 422232425262728
Week 5293031
February 429
MoTuWeThFrSaSu
Week 51234
Week 6567891011
Week 712131415161718
Week 819202122232425
Week 9262728
March 429
MoTuWeThFrSaSu
Week 91234
Week 10567891011
Week 1112131415161718
Week 1219202122232425
Week 13262728293031
April 429
MoTuWeThFrSaSu
Week 131
Week 142345678
Week 159101112131415
Week 1616171819202122
Week 1723242526272829
Week 1830
May 429
MoTuWeThFrSaSu
Week 18123456
Week 1978910111213
Week 2014151617181920
Week 2121222324252627
Week 2228293031
June 429
MoTuWeThFrSaSu
Week 22123
Week 2345678910
Week 2411121314151617
Week 2518192021222324
Week 26252627282930
July 429
MoTuWeThFrSaSu
Week 261
Week 272345678
Week 289101112131415
Week 2916171819202122
Week 3023242526272829
Week 313031
August 429
MoTuWeThFrSaSu
Week 3112345
Week 326789101112
Week 3313141516171819
Week 3420212223242526
Week 352728293031
September 429
MoTuWeThFrSaSu
Week 3512
Week 363456789
Week 3710111213141516
Week 3817181920212223
Week 3924252627282930
October 429
MoTuWeThFrSaSu
Week 401234567
Week 41891011121314
Week 4215161718192021
Week 4322232425262728
Week 44293031
November 429
MoTuWeThFrSaSu
Week 441234
Week 45567891011
Week 4612131415161718
Week 4719202122232425
Week 482627282930
December 429
MoTuWeThFrSaSu
Week 212
Week 493456789
Week 5010111213141516
Week 5117181920212223
Week 5224252627282930
Week 131

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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 429 starts on January 1, 429 and ends on January 7, 429 (ISO 8601, Monday to Sunday). 429 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 429 have?

429 has 52 ISO weeks.

When does week 1 of 429 start?

Week 1 of 429 starts on January 1, 429 and ends on January 7, 429 (ISO 8601, Monday to Sunday).

When does the last week of 429 end?

Week 52 of 429 starts on December 24, 429 and ends on December 30, 429 (ISO 8601, Monday to Sunday).

Which years have 53 weeks?

The next years with 53 ISO weeks are 432, 437, 443, 448, 454.

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.