Week numbers 1204

1204 has 53 ISO weeks, because 1 January 1204 falls on a Thursday. Week 1: Dec 29, 1203 – Jan 4, 1204 · Week 53: Dec 27, 1204 – Jan 2, 1205

1204 at a glance

Weeks in 120453
Week 1December 29, 1203 – January 4, 1204
Week 53December 27, 1204 – January 2, 1205
Days in 1204366
Leap yearYes

All Weeks in 1204

Week From To Month
Week 1 in 1204 December 29, 1203 January 4, 1204 December / January
Week 2 in 1204 January 5, 1204 January 11, 1204 January
Week 3 in 1204 January 12, 1204 January 18, 1204 January
Week 4 in 1204 January 19, 1204 January 25, 1204 January
Week 5 in 1204 January 26, 1204 February 1, 1204 January / February
Week 6 in 1204 February 2, 1204 February 8, 1204 February
Week 7 in 1204 February 9, 1204 February 15, 1204 February
Week 8 in 1204 February 16, 1204 February 22, 1204 February
Week 9 in 1204 February 23, 1204 February 29, 1204 February
Week 10 in 1204 March 1, 1204 March 7, 1204 March
Week 11 in 1204 March 8, 1204 March 14, 1204 March
Week 12 in 1204 March 15, 1204 March 21, 1204 March
Week 13 in 1204 March 22, 1204 March 28, 1204 March
Week 14 in 1204 March 29, 1204 April 4, 1204 March / April
Week 15 in 1204 April 5, 1204 April 11, 1204 April
Week 16 in 1204 April 12, 1204 April 18, 1204 April
Week 17 in 1204 April 19, 1204 April 25, 1204 April
Week 18 in 1204 April 26, 1204 May 2, 1204 April / May
Week 19 in 1204 May 3, 1204 May 9, 1204 May
Week 20 in 1204 May 10, 1204 May 16, 1204 May
Week 21 in 1204 May 17, 1204 May 23, 1204 May
Week 22 in 1204 May 24, 1204 May 30, 1204 May
Week 23 in 1204 May 31, 1204 June 6, 1204 May / June
Week 24 in 1204 June 7, 1204 June 13, 1204 June
Week 25 in 1204 June 14, 1204 June 20, 1204 June
Week 26 in 1204 June 21, 1204 June 27, 1204 June
Week 27 in 1204 June 28, 1204 July 4, 1204 June / July
Week 28 in 1204 July 5, 1204 July 11, 1204 July
Week 29 in 1204 July 12, 1204 July 18, 1204 July
Week 30 in 1204 July 19, 1204 July 25, 1204 July
Week 31 in 1204 July 26, 1204 August 1, 1204 July / August
Week 32 in 1204 August 2, 1204 August 8, 1204 August
Week 33 in 1204 August 9, 1204 August 15, 1204 August
Week 34 in 1204 August 16, 1204 August 22, 1204 August
Week 35 in 1204 August 23, 1204 August 29, 1204 August
Week 36 in 1204 August 30, 1204 September 5, 1204 August / September
Week 37 in 1204 September 6, 1204 September 12, 1204 September
Week 38 in 1204 September 13, 1204 September 19, 1204 September
Week 39 in 1204 September 20, 1204 September 26, 1204 September
Week 40 in 1204 September 27, 1204 October 3, 1204 September / October
Week 41 in 1204 October 4, 1204 October 10, 1204 October
Week 42 in 1204 October 11, 1204 October 17, 1204 October
Week 43 in 1204 October 18, 1204 October 24, 1204 October
Week 44 in 1204 October 25, 1204 October 31, 1204 October
Week 45 in 1204 November 1, 1204 November 7, 1204 November
Week 46 in 1204 November 8, 1204 November 14, 1204 November
Week 47 in 1204 November 15, 1204 November 21, 1204 November
Week 48 in 1204 November 22, 1204 November 28, 1204 November
Week 49 in 1204 November 29, 1204 December 5, 1204 November / December
Week 50 in 1204 December 6, 1204 December 12, 1204 December
Week 51 in 1204 December 13, 1204 December 19, 1204 December
Week 52 in 1204 December 20, 1204 December 26, 1204 December
Week 53 in 1204 December 27, 1204 January 2, 1205 December / January

Calendars 1204

January 1204
MoTuWeThFrSaSu
Week 11234
Week 2567891011
Week 312131415161718
Week 419202122232425
Week 5262728293031
February 1204
MoTuWeThFrSaSu
Week 51
Week 62345678
Week 79101112131415
Week 816171819202122
Week 923242526272829
March 1204
MoTuWeThFrSaSu
Week 101234567
Week 11891011121314
Week 1215161718192021
Week 1322232425262728
Week 14293031
April 1204
MoTuWeThFrSaSu
Week 141234
Week 15567891011
Week 1612131415161718
Week 1719202122232425
Week 182627282930
May 1204
MoTuWeThFrSaSu
Week 1812
Week 193456789
Week 2010111213141516
Week 2117181920212223
Week 2224252627282930
Week 2331
June 1204
MoTuWeThFrSaSu
Week 23123456
Week 2478910111213
Week 2514151617181920
Week 2621222324252627
Week 27282930
July 1204
MoTuWeThFrSaSu
Week 271234
Week 28567891011
Week 2912131415161718
Week 3019202122232425
Week 31262728293031
August 1204
MoTuWeThFrSaSu
Week 311
Week 322345678
Week 339101112131415
Week 3416171819202122
Week 3523242526272829
Week 363031
September 1204
MoTuWeThFrSaSu
Week 3612345
Week 376789101112
Week 3813141516171819
Week 3920212223242526
Week 4027282930
October 1204
MoTuWeThFrSaSu
Week 40123
Week 4145678910
Week 4211121314151617
Week 4318192021222324
Week 4425262728293031
November 1204
MoTuWeThFrSaSu
Week 451234567
Week 46891011121314
Week 4715161718192021
Week 4822232425262728
Week 492930
December 1204
MoTuWeThFrSaSu
Week 212345
Week 506789101112
Week 5113141516171819
Week 5220212223242526
Week 532728293031

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 1204 starts on December 29, 1203 and ends on January 4, 1204 (ISO 8601, Monday to Sunday). 1204 has 53 ISO weeks, because 1 January 1204 falls on a Thursday.

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 1204 have?

1204 has 53 ISO weeks, because 1 January 1204 falls on a Thursday.

When does week 1 of 1204 start?

Week 1 of 1204 starts on December 29, 1203 and ends on January 4, 1204 (ISO 8601, Monday to Sunday).

When does the last week of 1204 end?

Week 53 of 1204 starts on December 27, 1204 and ends on January 2, 1205 (ISO 8601, Monday to Sunday).

Which years have 53 weeks?

The next years with 53 ISO weeks are 1204, 1209, 1215, 1220, 1226.

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.