Week numbers 230

230 has 52 ISO weeks. Week 1: Jan 4 – 10 · Week 52: Dec 27, 230 – Jan 2, 231

230 at a glance

Weeks in 23052
Week 1January 4, 230 – January 10, 230
Week 52December 27, 230 – January 2, 231
Days in 230365
Leap yearNo

All Weeks in 230

Week From To Month
Week 1 in 230 January 4, 230 January 10, 230 January
Week 2 in 230 January 11, 230 January 17, 230 January
Week 3 in 230 January 18, 230 January 24, 230 January
Week 4 in 230 January 25, 230 January 31, 230 January
Week 5 in 230 February 1, 230 February 7, 230 February
Week 6 in 230 February 8, 230 February 14, 230 February
Week 7 in 230 February 15, 230 February 21, 230 February
Week 8 in 230 February 22, 230 February 28, 230 February
Week 9 in 230 March 1, 230 March 7, 230 March
Week 10 in 230 March 8, 230 March 14, 230 March
Week 11 in 230 March 15, 230 March 21, 230 March
Week 12 in 230 March 22, 230 March 28, 230 March
Week 13 in 230 March 29, 230 April 4, 230 March / April
Week 14 in 230 April 5, 230 April 11, 230 April
Week 15 in 230 April 12, 230 April 18, 230 April
Week 16 in 230 April 19, 230 April 25, 230 April
Week 17 in 230 April 26, 230 May 2, 230 April / May
Week 18 in 230 May 3, 230 May 9, 230 May
Week 19 in 230 May 10, 230 May 16, 230 May
Week 20 in 230 May 17, 230 May 23, 230 May
Week 21 in 230 May 24, 230 May 30, 230 May
Week 22 in 230 May 31, 230 June 6, 230 May / June
Week 23 in 230 June 7, 230 June 13, 230 June
Week 24 in 230 June 14, 230 June 20, 230 June
Week 25 in 230 June 21, 230 June 27, 230 June
Week 26 in 230 June 28, 230 July 4, 230 June / July
Week 27 in 230 July 5, 230 July 11, 230 July
Week 28 in 230 July 12, 230 July 18, 230 July
Week 29 in 230 July 19, 230 July 25, 230 July
Week 30 in 230 July 26, 230 August 1, 230 July / August
Week 31 in 230 August 2, 230 August 8, 230 August
Week 32 in 230 August 9, 230 August 15, 230 August
Week 33 in 230 August 16, 230 August 22, 230 August
Week 34 in 230 August 23, 230 August 29, 230 August
Week 35 in 230 August 30, 230 September 5, 230 August / September
Week 36 in 230 September 6, 230 September 12, 230 September
Week 37 in 230 September 13, 230 September 19, 230 September
Week 38 in 230 September 20, 230 September 26, 230 September
Week 39 in 230 September 27, 230 October 3, 230 September / October
Week 40 in 230 October 4, 230 October 10, 230 October
Week 41 in 230 October 11, 230 October 17, 230 October
Week 42 in 230 October 18, 230 October 24, 230 October
Week 43 in 230 October 25, 230 October 31, 230 October
Week 44 in 230 November 1, 230 November 7, 230 November
Week 45 in 230 November 8, 230 November 14, 230 November
Week 46 in 230 November 15, 230 November 21, 230 November
Week 47 in 230 November 22, 230 November 28, 230 November
Week 48 in 230 November 29, 230 December 5, 230 November / December
Week 49 in 230 December 6, 230 December 12, 230 December
Week 50 in 230 December 13, 230 December 19, 230 December
Week 51 in 230 December 20, 230 December 26, 230 December
Week 52 in 230 December 27, 230 January 2, 231 December / January

Calendars 230

January 230
MoTuWeThFrSaSu
Week 53123
Week 145678910
Week 211121314151617
Week 318192021222324
Week 425262728293031
February 230
MoTuWeThFrSaSu
Week 51234567
Week 6891011121314
Week 715161718192021
Week 822232425262728
March 230
MoTuWeThFrSaSu
Week 91234567
Week 10891011121314
Week 1115161718192021
Week 1222232425262728
Week 13293031
April 230
MoTuWeThFrSaSu
Week 131234
Week 14567891011
Week 1512131415161718
Week 1619202122232425
Week 172627282930
May 230
MoTuWeThFrSaSu
Week 1712
Week 183456789
Week 1910111213141516
Week 2017181920212223
Week 2124252627282930
Week 2231
June 230
MoTuWeThFrSaSu
Week 22123456
Week 2378910111213
Week 2414151617181920
Week 2521222324252627
Week 26282930
July 230
MoTuWeThFrSaSu
Week 261234
Week 27567891011
Week 2812131415161718
Week 2919202122232425
Week 30262728293031
August 230
MoTuWeThFrSaSu
Week 301
Week 312345678
Week 329101112131415
Week 3316171819202122
Week 3423242526272829
Week 353031
September 230
MoTuWeThFrSaSu
Week 3512345
Week 366789101112
Week 3713141516171819
Week 3820212223242526
Week 3927282930
October 230
MoTuWeThFrSaSu
Week 39123
Week 4045678910
Week 4111121314151617
Week 4218192021222324
Week 4325262728293031
November 230
MoTuWeThFrSaSu
Week 441234567
Week 45891011121314
Week 4615161718192021
Week 4722232425262728
Week 482930
December 230
MoTuWeThFrSaSu
Week 112345
Week 496789101112
Week 5013141516171819
Week 5120212223242526
Week 522728293031

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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 230 starts on January 4, 230 and ends on January 10, 230 (ISO 8601, Monday to Sunday). 230 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 230 have?

230 has 52 ISO weeks.

When does week 1 of 230 start?

Week 1 of 230 starts on January 4, 230 and ends on January 10, 230 (ISO 8601, Monday to Sunday).

When does the last week of 230 end?

Week 52 of 230 starts on December 27, 230 and ends on January 2, 231 (ISO 8601, Monday to Sunday).

Which years have 53 weeks?

The next years with 53 ISO weeks are 235, 240, 246, 252, 257.

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.