Week Numbers for 2026
Complete list of ISO 8601 week numbers for 2026, showing the start and end dates for each week. Week 1 contains January 4th.
53 weeks in 2026
| Week Number | From Date (Monday) | To Date (Sunday) |
|---|---|---|
Week 01 | December 29, 2025 | January 4, 2026 |
Week 02 | January 5, 2026 | January 11, 2026 |
Week 03 | January 12, 2026 | January 18, 2026 |
Week 04 | January 19, 2026 | January 25, 2026 |
Week 05 | January 26, 2026 | February 1, 2026 |
Week 06 | February 2, 2026 | February 8, 2026 |
Week 07 | February 9, 2026 | February 15, 2026 |
Week 08 | February 16, 2026 | February 22, 2026 |
Week 09 | February 23, 2026 | March 1, 2026 |
Week 10 | March 2, 2026 | March 8, 2026 |
Week 11 | March 9, 2026 | March 15, 2026 |
Week 12 | March 16, 2026 | March 22, 2026 |
Week 13 | March 23, 2026 | March 29, 2026 |
Week 14 | March 30, 2026 | April 5, 2026 |
Week 15 | April 6, 2026 | April 12, 2026 |
Week 16 | April 13, 2026 | April 19, 2026 |
Week 17 | April 20, 2026 | April 26, 2026 |
Week 18 | April 27, 2026 | May 3, 2026 |
Week 19 | May 4, 2026 | May 10, 2026 |
Week 20 | May 11, 2026 | May 17, 2026 |
Week 21 | May 18, 2026 | May 24, 2026 |
Week 22 | May 25, 2026 | May 31, 2026 |
Week 23 | June 1, 2026 | June 7, 2026 |
Week 24 | June 8, 2026 | June 14, 2026 |
Week 25 | June 15, 2026 | June 21, 2026 |
Week 26 | June 22, 2026 | June 28, 2026 |
Week 27 | June 29, 2026 | July 5, 2026 |
Week 28 | July 6, 2026 | July 12, 2026 |
Week 29 | July 13, 2026 | July 19, 2026 |
Week 30 | July 20, 2026 | July 26, 2026 |
Week 31 | July 27, 2026 | August 2, 2026 |
Week 32 | August 3, 2026 | August 9, 2026 |
Week 33 | August 10, 2026 | August 16, 2026 |
Week 34 | August 17, 2026 | August 23, 2026 |
Week 35 | August 24, 2026 | August 30, 2026 |
Week 36 | August 31, 2026 | September 6, 2026 |
Week 37 | September 7, 2026 | September 13, 2026 |
Week 38 | September 14, 2026 | September 20, 2026 |
Week 39 | September 21, 2026 | September 27, 2026 |
Week 40 | September 28, 2026 | October 4, 2026 |
Week 41 | October 5, 2026 | October 11, 2026 |
Week 42 | October 12, 2026 | October 18, 2026 |
Week 43 | October 19, 2026 | October 25, 2026 |
Week 44 | October 26, 2026 | November 1, 2026 |
Week 45 | November 2, 2026 | November 8, 2026 |
Week 46 | November 9, 2026 | November 15, 2026 |
Week 47 | November 16, 2026 | November 22, 2026 |
Week 48 | November 23, 2026 | November 29, 2026 |
Week 49 | November 30, 2026 | December 6, 2026 |
Week 50 | December 7, 2026 | December 13, 2026 |
Week 51 | December 14, 2026 | December 20, 2026 |
Week 52 | December 21, 2026 | December 27, 2026 |
Week 53 | December 28, 2026 | January 3, 2027 |
Week 01
From Date (Monday): December 29, 2025
To Date (Sunday): January 4, 2026
Week 02
From Date (Monday): January 5, 2026
To Date (Sunday): January 11, 2026
Week 03
From Date (Monday): January 12, 2026
To Date (Sunday): January 18, 2026
Week 04
From Date (Monday): January 19, 2026
To Date (Sunday): January 25, 2026
Week 05
From Date (Monday): January 26, 2026
To Date (Sunday): February 1, 2026
Week 06
From Date (Monday): February 2, 2026
To Date (Sunday): February 8, 2026
Week 07
From Date (Monday): February 9, 2026
To Date (Sunday): February 15, 2026
Week 08
From Date (Monday): February 16, 2026
To Date (Sunday): February 22, 2026
Week 09
From Date (Monday): February 23, 2026
To Date (Sunday): March 1, 2026
Week 10
From Date (Monday): March 2, 2026
To Date (Sunday): March 8, 2026
Week 11
From Date (Monday): March 9, 2026
To Date (Sunday): March 15, 2026
Week 12
From Date (Monday): March 16, 2026
To Date (Sunday): March 22, 2026
Week 13
From Date (Monday): March 23, 2026
To Date (Sunday): March 29, 2026
Week 14
From Date (Monday): March 30, 2026
To Date (Sunday): April 5, 2026
Week 15
From Date (Monday): April 6, 2026
To Date (Sunday): April 12, 2026
Week 16
From Date (Monday): April 13, 2026
To Date (Sunday): April 19, 2026
Week 17
From Date (Monday): April 20, 2026
To Date (Sunday): April 26, 2026
Week 18
From Date (Monday): April 27, 2026
To Date (Sunday): May 3, 2026
Week 19
From Date (Monday): May 4, 2026
To Date (Sunday): May 10, 2026
Week 20
From Date (Monday): May 11, 2026
To Date (Sunday): May 17, 2026
Week 21
From Date (Monday): May 18, 2026
To Date (Sunday): May 24, 2026
Week 22
From Date (Monday): May 25, 2026
To Date (Sunday): May 31, 2026
Week 23
From Date (Monday): June 1, 2026
To Date (Sunday): June 7, 2026
Week 24
From Date (Monday): June 8, 2026
To Date (Sunday): June 14, 2026
Week 25
From Date (Monday): June 15, 2026
To Date (Sunday): June 21, 2026
Week 26
From Date (Monday): June 22, 2026
To Date (Sunday): June 28, 2026
Week 27
From Date (Monday): June 29, 2026
To Date (Sunday): July 5, 2026
Week 28
From Date (Monday): July 6, 2026
To Date (Sunday): July 12, 2026
Week 29
From Date (Monday): July 13, 2026
To Date (Sunday): July 19, 2026
Week 30
From Date (Monday): July 20, 2026
To Date (Sunday): July 26, 2026
Week 31
From Date (Monday): July 27, 2026
To Date (Sunday): August 2, 2026
Week 32
From Date (Monday): August 3, 2026
To Date (Sunday): August 9, 2026
Week 33
From Date (Monday): August 10, 2026
To Date (Sunday): August 16, 2026
Week 34
From Date (Monday): August 17, 2026
To Date (Sunday): August 23, 2026
Week 35
From Date (Monday): August 24, 2026
To Date (Sunday): August 30, 2026
Week 36
From Date (Monday): August 31, 2026
To Date (Sunday): September 6, 2026
Week 37
From Date (Monday): September 7, 2026
To Date (Sunday): September 13, 2026
Week 38
From Date (Monday): September 14, 2026
To Date (Sunday): September 20, 2026
Week 39
From Date (Monday): September 21, 2026
To Date (Sunday): September 27, 2026
Week 40
From Date (Monday): September 28, 2026
To Date (Sunday): October 4, 2026
Week 41
From Date (Monday): October 5, 2026
To Date (Sunday): October 11, 2026
Week 42
From Date (Monday): October 12, 2026
To Date (Sunday): October 18, 2026
Week 43
From Date (Monday): October 19, 2026
To Date (Sunday): October 25, 2026
Week 44
From Date (Monday): October 26, 2026
To Date (Sunday): November 1, 2026
Week 45
From Date (Monday): November 2, 2026
To Date (Sunday): November 8, 2026
Week 46
From Date (Monday): November 9, 2026
To Date (Sunday): November 15, 2026
Week 47
From Date (Monday): November 16, 2026
To Date (Sunday): November 22, 2026
Week 48
From Date (Monday): November 23, 2026
To Date (Sunday): November 29, 2026
Week 49
From Date (Monday): November 30, 2026
To Date (Sunday): December 6, 2026
Week 50
From Date (Monday): December 7, 2026
To Date (Sunday): December 13, 2026
Week 51
From Date (Monday): December 14, 2026
To Date (Sunday): December 20, 2026
Week 52
From Date (Monday): December 21, 2026
To Date (Sunday): December 27, 2026
Week 53
From Date (Monday): December 28, 2026
To Date (Sunday): January 3, 2027