Week numbers 425

425 has 52 ISO weeks. Week 1: Dec 30, 424 – Jan 5, 425 · Week 52: Dec 22 – 28

425 at a glance

Weeks in 42552
Week 1December 30, 424 – January 5, 425
Week 52December 22, 425 – December 28, 425
Days in 425365
Leap yearNo

All Weeks in 425

Week From To Month
Week 1 in 425 December 30, 424 January 5, 425 December / January
Week 2 in 425 January 6, 425 January 12, 425 January
Week 3 in 425 January 13, 425 January 19, 425 January
Week 4 in 425 January 20, 425 January 26, 425 January
Week 5 in 425 January 27, 425 February 2, 425 January / February
Week 6 in 425 February 3, 425 February 9, 425 February
Week 7 in 425 February 10, 425 February 16, 425 February
Week 8 in 425 February 17, 425 February 23, 425 February
Week 9 in 425 February 24, 425 March 2, 425 February / March
Week 10 in 425 March 3, 425 March 9, 425 March
Week 11 in 425 March 10, 425 March 16, 425 March
Week 12 in 425 March 17, 425 March 23, 425 March
Week 13 in 425 March 24, 425 March 30, 425 March
Week 14 in 425 March 31, 425 April 6, 425 March / April
Week 15 in 425 April 7, 425 April 13, 425 April
Week 16 in 425 April 14, 425 April 20, 425 April
Week 17 in 425 April 21, 425 April 27, 425 April
Week 18 in 425 April 28, 425 May 4, 425 April / May
Week 19 in 425 May 5, 425 May 11, 425 May
Week 20 in 425 May 12, 425 May 18, 425 May
Week 21 in 425 May 19, 425 May 25, 425 May
Week 22 in 425 May 26, 425 June 1, 425 May / June
Week 23 in 425 June 2, 425 June 8, 425 June
Week 24 in 425 June 9, 425 June 15, 425 June
Week 25 in 425 June 16, 425 June 22, 425 June
Week 26 in 425 June 23, 425 June 29, 425 June
Week 27 in 425 June 30, 425 July 6, 425 June / July
Week 28 in 425 July 7, 425 July 13, 425 July
Week 29 in 425 July 14, 425 July 20, 425 July
Week 30 in 425 July 21, 425 July 27, 425 July
Week 31 in 425 July 28, 425 August 3, 425 July / August
Week 32 in 425 August 4, 425 August 10, 425 August
Week 33 in 425 August 11, 425 August 17, 425 August
Week 34 in 425 August 18, 425 August 24, 425 August
Week 35 in 425 August 25, 425 August 31, 425 August
Week 36 in 425 September 1, 425 September 7, 425 September
Week 37 in 425 September 8, 425 September 14, 425 September
Week 38 in 425 September 15, 425 September 21, 425 September
Week 39 in 425 September 22, 425 September 28, 425 September
Week 40 in 425 September 29, 425 October 5, 425 September / October
Week 41 in 425 October 6, 425 October 12, 425 October
Week 42 in 425 October 13, 425 October 19, 425 October
Week 43 in 425 October 20, 425 October 26, 425 October
Week 44 in 425 October 27, 425 November 2, 425 October / November
Week 45 in 425 November 3, 425 November 9, 425 November
Week 46 in 425 November 10, 425 November 16, 425 November
Week 47 in 425 November 17, 425 November 23, 425 November
Week 48 in 425 November 24, 425 November 30, 425 November
Week 49 in 425 December 1, 425 December 7, 425 December
Week 50 in 425 December 8, 425 December 14, 425 December
Week 51 in 425 December 15, 425 December 21, 425 December
Week 52 in 425 December 22, 425 December 28, 425 December

Calendars 425

January 425
MoTuWeThFrSaSu
Week 112345
Week 26789101112
Week 313141516171819
Week 420212223242526
Week 52728293031
February 425
MoTuWeThFrSaSu
Week 512
Week 63456789
Week 710111213141516
Week 817181920212223
Week 92425262728
March 425
MoTuWeThFrSaSu
Week 912
Week 103456789
Week 1110111213141516
Week 1217181920212223
Week 1324252627282930
Week 1431
April 425
MoTuWeThFrSaSu
Week 14123456
Week 1578910111213
Week 1614151617181920
Week 1721222324252627
Week 18282930
May 425
MoTuWeThFrSaSu
Week 181234
Week 19567891011
Week 2012131415161718
Week 2119202122232425
Week 22262728293031
June 425
MoTuWeThFrSaSu
Week 221
Week 232345678
Week 249101112131415
Week 2516171819202122
Week 2623242526272829
Week 2730
July 425
MoTuWeThFrSaSu
Week 27123456
Week 2878910111213
Week 2914151617181920
Week 3021222324252627
Week 3128293031
August 425
MoTuWeThFrSaSu
Week 31123
Week 3245678910
Week 3311121314151617
Week 3418192021222324
Week 3525262728293031
September 425
MoTuWeThFrSaSu
Week 361234567
Week 37891011121314
Week 3815161718192021
Week 3922232425262728
Week 402930
October 425
MoTuWeThFrSaSu
Week 4012345
Week 416789101112
Week 4213141516171819
Week 4320212223242526
Week 442728293031
November 425
MoTuWeThFrSaSu
Week 4412
Week 453456789
Week 4610111213141516
Week 4717181920212223
Week 4824252627282930
December 425
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 425 starts on December 30, 424 and ends on January 5, 425 (ISO 8601, Monday to Sunday). 425 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 425 have?

425 has 52 ISO weeks.

When does week 1 of 425 start?

Week 1 of 425 starts on December 30, 424 and ends on January 5, 425 (ISO 8601, Monday to Sunday).

When does the last week of 425 end?

Week 52 of 425 starts on December 22, 425 and ends on December 28, 425 (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.