Week numbers 199

199 has 52 ISO weeks. Week 1: Dec 31, 198 – Jan 6, 199 · Week 52: Dec 23 – 29

199 at a glance

Weeks in 19952
Week 1December 31, 198 – January 6, 199
Week 52December 23, 199 – December 29, 199
Days in 199365
Leap yearNo

All Weeks in 199

Week From To Month
Week 1 in 199 December 31, 198 January 6, 199 December / January
Week 2 in 199 January 7, 199 January 13, 199 January
Week 3 in 199 January 14, 199 January 20, 199 January
Week 4 in 199 January 21, 199 January 27, 199 January
Week 5 in 199 January 28, 199 February 3, 199 January / February
Week 6 in 199 February 4, 199 February 10, 199 February
Week 7 in 199 February 11, 199 February 17, 199 February
Week 8 in 199 February 18, 199 February 24, 199 February
Week 9 in 199 February 25, 199 March 3, 199 February / March
Week 10 in 199 March 4, 199 March 10, 199 March
Week 11 in 199 March 11, 199 March 17, 199 March
Week 12 in 199 March 18, 199 March 24, 199 March
Week 13 in 199 March 25, 199 March 31, 199 March
Week 14 in 199 April 1, 199 April 7, 199 April
Week 15 in 199 April 8, 199 April 14, 199 April
Week 16 in 199 April 15, 199 April 21, 199 April
Week 17 in 199 April 22, 199 April 28, 199 April
Week 18 in 199 April 29, 199 May 5, 199 April / May
Week 19 in 199 May 6, 199 May 12, 199 May
Week 20 in 199 May 13, 199 May 19, 199 May
Week 21 in 199 May 20, 199 May 26, 199 May
Week 22 in 199 May 27, 199 June 2, 199 May / June
Week 23 in 199 June 3, 199 June 9, 199 June
Week 24 in 199 June 10, 199 June 16, 199 June
Week 25 in 199 June 17, 199 June 23, 199 June
Week 26 in 199 June 24, 199 June 30, 199 June
Week 27 in 199 July 1, 199 July 7, 199 July
Week 28 in 199 July 8, 199 July 14, 199 July
Week 29 in 199 July 15, 199 July 21, 199 July
Week 30 in 199 July 22, 199 July 28, 199 July
Week 31 in 199 July 29, 199 August 4, 199 July / August
Week 32 in 199 August 5, 199 August 11, 199 August
Week 33 in 199 August 12, 199 August 18, 199 August
Week 34 in 199 August 19, 199 August 25, 199 August
Week 35 in 199 August 26, 199 September 1, 199 August / September
Week 36 in 199 September 2, 199 September 8, 199 September
Week 37 in 199 September 9, 199 September 15, 199 September
Week 38 in 199 September 16, 199 September 22, 199 September
Week 39 in 199 September 23, 199 September 29, 199 September
Week 40 in 199 September 30, 199 October 6, 199 September / October
Week 41 in 199 October 7, 199 October 13, 199 October
Week 42 in 199 October 14, 199 October 20, 199 October
Week 43 in 199 October 21, 199 October 27, 199 October
Week 44 in 199 October 28, 199 November 3, 199 October / November
Week 45 in 199 November 4, 199 November 10, 199 November
Week 46 in 199 November 11, 199 November 17, 199 November
Week 47 in 199 November 18, 199 November 24, 199 November
Week 48 in 199 November 25, 199 December 1, 199 November / December
Week 49 in 199 December 2, 199 December 8, 199 December
Week 50 in 199 December 9, 199 December 15, 199 December
Week 51 in 199 December 16, 199 December 22, 199 December
Week 52 in 199 December 23, 199 December 29, 199 December

Calendars 199

January 199
MoTuWeThFrSaSu
Week 1123456
Week 278910111213
Week 314151617181920
Week 421222324252627
Week 528293031
February 199
MoTuWeThFrSaSu
Week 5123
Week 645678910
Week 711121314151617
Week 818192021222324
Week 925262728
March 199
MoTuWeThFrSaSu
Week 9123
Week 1045678910
Week 1111121314151617
Week 1218192021222324
Week 1325262728293031
April 199
MoTuWeThFrSaSu
Week 141234567
Week 15891011121314
Week 1615161718192021
Week 1722232425262728
Week 182930
May 199
MoTuWeThFrSaSu
Week 1812345
Week 196789101112
Week 2013141516171819
Week 2120212223242526
Week 222728293031
June 199
MoTuWeThFrSaSu
Week 2212
Week 233456789
Week 2410111213141516
Week 2517181920212223
Week 2624252627282930
July 199
MoTuWeThFrSaSu
Week 271234567
Week 28891011121314
Week 2915161718192021
Week 3022232425262728
Week 31293031
August 199
MoTuWeThFrSaSu
Week 311234
Week 32567891011
Week 3312131415161718
Week 3419202122232425
Week 35262728293031
September 199
MoTuWeThFrSaSu
Week 351
Week 362345678
Week 379101112131415
Week 3816171819202122
Week 3923242526272829
Week 4030
October 199
MoTuWeThFrSaSu
Week 40123456
Week 4178910111213
Week 4214151617181920
Week 4321222324252627
Week 4428293031
November 199
MoTuWeThFrSaSu
Week 44123
Week 4545678910
Week 4611121314151617
Week 4718192021222324
Week 48252627282930
December 199
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 199 starts on December 31, 198 and ends on January 6, 199 (ISO 8601, Monday to Sunday). 199 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 199 have?

199 has 52 ISO weeks.

When does week 1 of 199 start?

Week 1 of 199 starts on December 31, 198 and ends on January 6, 199 (ISO 8601, Monday to Sunday).

When does the last week of 199 end?

Week 52 of 199 starts on December 23, 199 and ends on December 29, 199 (ISO 8601, Monday to Sunday).

Which years have 53 weeks?

The next years with 53 ISO weeks are 201, 207, 212, 218, 224.

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.