Week numbers 878

878 has 52 ISO weeks. Week 1: Jan 3 – 9 · Week 52: Dec 26, 878 – Jan 1, 879

878 at a glance

Weeks in 87852
Week 1January 3, 878 – January 9, 878
Week 52December 26, 878 – January 1, 879
Days in 878365
Leap yearNo

All Weeks in 878

Week From To Month
Week 1 in 878 January 3, 878 January 9, 878 January
Week 2 in 878 January 10, 878 January 16, 878 January
Week 3 in 878 January 17, 878 January 23, 878 January
Week 4 in 878 January 24, 878 January 30, 878 January
Week 5 in 878 January 31, 878 February 6, 878 January / February
Week 6 in 878 February 7, 878 February 13, 878 February
Week 7 in 878 February 14, 878 February 20, 878 February
Week 8 in 878 February 21, 878 February 27, 878 February
Week 9 in 878 February 28, 878 March 6, 878 February / March
Week 10 in 878 March 7, 878 March 13, 878 March
Week 11 in 878 March 14, 878 March 20, 878 March
Week 12 in 878 March 21, 878 March 27, 878 March
Week 13 in 878 March 28, 878 April 3, 878 March / April
Week 14 in 878 April 4, 878 April 10, 878 April
Week 15 in 878 April 11, 878 April 17, 878 April
Week 16 in 878 April 18, 878 April 24, 878 April
Week 17 in 878 April 25, 878 May 1, 878 April / May
Week 18 in 878 May 2, 878 May 8, 878 May
Week 19 in 878 May 9, 878 May 15, 878 May
Week 20 in 878 May 16, 878 May 22, 878 May
Week 21 in 878 May 23, 878 May 29, 878 May
Week 22 in 878 May 30, 878 June 5, 878 May / June
Week 23 in 878 June 6, 878 June 12, 878 June
Week 24 in 878 June 13, 878 June 19, 878 June
Week 25 in 878 June 20, 878 June 26, 878 June
Week 26 in 878 June 27, 878 July 3, 878 June / July
Week 27 in 878 July 4, 878 July 10, 878 July
Week 28 in 878 July 11, 878 July 17, 878 July
Week 29 in 878 July 18, 878 July 24, 878 July
Week 30 in 878 July 25, 878 July 31, 878 July
Week 31 in 878 August 1, 878 August 7, 878 August
Week 32 in 878 August 8, 878 August 14, 878 August
Week 33 in 878 August 15, 878 August 21, 878 August
Week 34 in 878 August 22, 878 August 28, 878 August
Week 35 in 878 August 29, 878 September 4, 878 August / September
Week 36 in 878 September 5, 878 September 11, 878 September
Week 37 in 878 September 12, 878 September 18, 878 September
Week 38 in 878 September 19, 878 September 25, 878 September
Week 39 in 878 September 26, 878 October 2, 878 September / October
Week 40 in 878 October 3, 878 October 9, 878 October
Week 41 in 878 October 10, 878 October 16, 878 October
Week 42 in 878 October 17, 878 October 23, 878 October
Week 43 in 878 October 24, 878 October 30, 878 October
Week 44 in 878 October 31, 878 November 6, 878 October / November
Week 45 in 878 November 7, 878 November 13, 878 November
Week 46 in 878 November 14, 878 November 20, 878 November
Week 47 in 878 November 21, 878 November 27, 878 November
Week 48 in 878 November 28, 878 December 4, 878 November / December
Week 49 in 878 December 5, 878 December 11, 878 December
Week 50 in 878 December 12, 878 December 18, 878 December
Week 51 in 878 December 19, 878 December 25, 878 December
Week 52 in 878 December 26, 878 January 1, 879 December / January

Calendars 878

January 878
MoTuWeThFrSaSu
Week 5212
Week 13456789
Week 210111213141516
Week 317181920212223
Week 424252627282930
Week 531
February 878
MoTuWeThFrSaSu
Week 5123456
Week 678910111213
Week 714151617181920
Week 821222324252627
Week 928
March 878
MoTuWeThFrSaSu
Week 9123456
Week 1078910111213
Week 1114151617181920
Week 1221222324252627
Week 1328293031
April 878
MoTuWeThFrSaSu
Week 13123
Week 1445678910
Week 1511121314151617
Week 1618192021222324
Week 17252627282930
May 878
MoTuWeThFrSaSu
Week 171
Week 182345678
Week 199101112131415
Week 2016171819202122
Week 2123242526272829
Week 223031
June 878
MoTuWeThFrSaSu
Week 2212345
Week 236789101112
Week 2413141516171819
Week 2520212223242526
Week 2627282930
July 878
MoTuWeThFrSaSu
Week 26123
Week 2745678910
Week 2811121314151617
Week 2918192021222324
Week 3025262728293031
August 878
MoTuWeThFrSaSu
Week 311234567
Week 32891011121314
Week 3315161718192021
Week 3422232425262728
Week 35293031
September 878
MoTuWeThFrSaSu
Week 351234
Week 36567891011
Week 3712131415161718
Week 3819202122232425
Week 392627282930
October 878
MoTuWeThFrSaSu
Week 3912
Week 403456789
Week 4110111213141516
Week 4217181920212223
Week 4324252627282930
Week 4431
November 878
MoTuWeThFrSaSu
Week 44123456
Week 4578910111213
Week 4614151617181920
Week 4721222324252627
Week 48282930
December 878
MoTuWeThFrSaSu
Week 11234
Week 49567891011
Week 5012131415161718
Week 5119202122232425
Week 52262728293031

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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 878 starts on January 3, 878 and ends on January 9, 878 (ISO 8601, Monday to Sunday). 878 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 878 have?

878 has 52 ISO weeks.

When does week 1 of 878 start?

Week 1 of 878 starts on January 3, 878 and ends on January 9, 878 (ISO 8601, Monday to Sunday).

When does the last week of 878 end?

Week 52 of 878 starts on December 26, 878 and ends on January 1, 879 (ISO 8601, Monday to Sunday).

Which years have 53 weeks?

The next years with 53 ISO weeks are 882, 888, 893, 899, 905.

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.