Week numbers 618

618 has 53 ISO weeks, because 1 January 618 falls on a Thursday. Week 1: Dec 29, 617 – Jan 4, 618 · Week 53: Dec 28, 618 – Jan 3, 619

618 at a glance

Weeks in 61853
Week 1December 29, 617 – January 4, 618
Week 53December 28, 618 – January 3, 619
Days in 618365
Leap yearNo

All Weeks in 618

Week From To Month
Week 1 in 618 December 29, 617 January 4, 618 December / January
Week 2 in 618 January 5, 618 January 11, 618 January
Week 3 in 618 January 12, 618 January 18, 618 January
Week 4 in 618 January 19, 618 January 25, 618 January
Week 5 in 618 January 26, 618 February 1, 618 January / February
Week 6 in 618 February 2, 618 February 8, 618 February
Week 7 in 618 February 9, 618 February 15, 618 February
Week 8 in 618 February 16, 618 February 22, 618 February
Week 9 in 618 February 23, 618 March 1, 618 February / March
Week 10 in 618 March 2, 618 March 8, 618 March
Week 11 in 618 March 9, 618 March 15, 618 March
Week 12 in 618 March 16, 618 March 22, 618 March
Week 13 in 618 March 23, 618 March 29, 618 March
Week 14 in 618 March 30, 618 April 5, 618 March / April
Week 15 in 618 April 6, 618 April 12, 618 April
Week 16 in 618 April 13, 618 April 19, 618 April
Week 17 in 618 April 20, 618 April 26, 618 April
Week 18 in 618 April 27, 618 May 3, 618 April / May
Week 19 in 618 May 4, 618 May 10, 618 May
Week 20 in 618 May 11, 618 May 17, 618 May
Week 21 in 618 May 18, 618 May 24, 618 May
Week 22 in 618 May 25, 618 May 31, 618 May
Week 23 in 618 June 1, 618 June 7, 618 June
Week 24 in 618 June 8, 618 June 14, 618 June
Week 25 in 618 June 15, 618 June 21, 618 June
Week 26 in 618 June 22, 618 June 28, 618 June
Week 27 in 618 June 29, 618 July 5, 618 June / July
Week 28 in 618 July 6, 618 July 12, 618 July
Week 29 in 618 July 13, 618 July 19, 618 July
Week 30 in 618 July 20, 618 July 26, 618 July
Week 31 in 618 July 27, 618 August 2, 618 July / August
Week 32 in 618 August 3, 618 August 9, 618 August
Week 33 in 618 August 10, 618 August 16, 618 August
Week 34 in 618 August 17, 618 August 23, 618 August
Week 35 in 618 August 24, 618 August 30, 618 August
Week 36 in 618 August 31, 618 September 6, 618 August / September
Week 37 in 618 September 7, 618 September 13, 618 September
Week 38 in 618 September 14, 618 September 20, 618 September
Week 39 in 618 September 21, 618 September 27, 618 September
Week 40 in 618 September 28, 618 October 4, 618 September / October
Week 41 in 618 October 5, 618 October 11, 618 October
Week 42 in 618 October 12, 618 October 18, 618 October
Week 43 in 618 October 19, 618 October 25, 618 October
Week 44 in 618 October 26, 618 November 1, 618 October / November
Week 45 in 618 November 2, 618 November 8, 618 November
Week 46 in 618 November 9, 618 November 15, 618 November
Week 47 in 618 November 16, 618 November 22, 618 November
Week 48 in 618 November 23, 618 November 29, 618 November
Week 49 in 618 November 30, 618 December 6, 618 November / December
Week 50 in 618 December 7, 618 December 13, 618 December
Week 51 in 618 December 14, 618 December 20, 618 December
Week 52 in 618 December 21, 618 December 27, 618 December
Week 53 in 618 December 28, 618 January 3, 619 December / January

Calendars 618

January 618
MoTuWeThFrSaSu
Week 11234
Week 2567891011
Week 312131415161718
Week 419202122232425
Week 5262728293031
February 618
MoTuWeThFrSaSu
Week 51
Week 62345678
Week 79101112131415
Week 816171819202122
Week 9232425262728
March 618
MoTuWeThFrSaSu
Week 91
Week 102345678
Week 119101112131415
Week 1216171819202122
Week 1323242526272829
Week 143031
April 618
MoTuWeThFrSaSu
Week 1412345
Week 156789101112
Week 1613141516171819
Week 1720212223242526
Week 1827282930
May 618
MoTuWeThFrSaSu
Week 18123
Week 1945678910
Week 2011121314151617
Week 2118192021222324
Week 2225262728293031
June 618
MoTuWeThFrSaSu
Week 231234567
Week 24891011121314
Week 2515161718192021
Week 2622232425262728
Week 272930
July 618
MoTuWeThFrSaSu
Week 2712345
Week 286789101112
Week 2913141516171819
Week 3020212223242526
Week 312728293031
August 618
MoTuWeThFrSaSu
Week 3112
Week 323456789
Week 3310111213141516
Week 3417181920212223
Week 3524252627282930
Week 3631
September 618
MoTuWeThFrSaSu
Week 36123456
Week 3778910111213
Week 3814151617181920
Week 3921222324252627
Week 40282930
October 618
MoTuWeThFrSaSu
Week 401234
Week 41567891011
Week 4212131415161718
Week 4319202122232425
Week 44262728293031
November 618
MoTuWeThFrSaSu
Week 441
Week 452345678
Week 469101112131415
Week 4716171819202122
Week 4823242526272829
Week 4930
December 618
MoTuWeThFrSaSu
Week 2123456
Week 5078910111213
Week 5114151617181920
Week 5221222324252627
Week 5328293031

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 618 starts on December 29, 617 and ends on January 4, 618 (ISO 8601, Monday to Sunday). 618 has 53 ISO weeks, because 1 January 618 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 618 have?

618 has 53 ISO weeks, because 1 January 618 falls on a Thursday.

When does week 1 of 618 start?

Week 1 of 618 starts on December 29, 617 and ends on January 4, 618 (ISO 8601, Monday to Sunday).

When does the last week of 618 end?

Week 53 of 618 starts on December 28, 618 and ends on January 3, 619 (ISO 8601, Monday to Sunday).

Which years have 53 weeks?

The next years with 53 ISO weeks are 618, 624, 629, 635, 640.

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.