Week Numbers 2029
2029 has 52 ISO weeks. Week 1 is the week with the year's first Thursday, and every week runs Monday to Sunday.
Below is the full list of 2029 week numbers with the exact Monday start date and Sunday end date for each week — plus a plain-language explainer of how ISO week numbering works and who uses it.
How 2029 numbers its weeks: 2029 starts on a Monday, so ISO week 1 begins on Monday January 1, 2029. The year runs through week 52, which ends on December 30, 2029. Like most years, 2029 fits into the standard 52 weeks.
What Are ISO Week Numbers?
An ISO week number is a simple way to name a week with a number from 1 to 52 or 53, instead of a range of dates. Saying "week 32" is shorter than "the week of August 3" and means the same thing to anyone using the standard. The rules come from ISO 8601, an international date standard, so a week number means the same thing worldwide.
How week numbering works
Two rules cover almost everything:
- Weeks start on Monday and end on Sunday.
- Week 1 is the week that holds the year's first Thursday — the same as the week that contains January 4.
Because of that first-Thursday rule, the first few 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. That's normal, not a mistake.
Why 2029 has 52 weeks
Most years, including 2029, have 52 ISO weeks. A year only gets a 53rd week when it starts on a Thursday (or a Wednesday in a leap year). 2029 starts on a Monday, so it has the usual 52.
Who uses week numbers?
- Payroll and finance — weekly and bi-weekly pay periods.
- Project and agile teams — sprints and delivery schedules often run by week number.
- Manufacturing and logistics — production and shipping plans use "CW" (calendar week) or "KW" in Europe.
- Schools and universities — term weeks and teaching schedules.
Tip: switch any of our monthly calendars to the Monday-start view and the week numbers appear right on the grid — handy for printing a wall calendar that shows them.
The Full 2029 Week Number Table
Every ISO week that touches 2029, with its Monday start and Sunday end. Weeks shown with another year in brackets belong to that year's numbering.
| Week | From (Monday) | To (Sunday) |
|---|---|---|
| W01 | January 1, 2029 | January 7, 2029 |
| W02 | January 8, 2029 | January 14, 2029 |
| W03 | January 15, 2029 | January 21, 2029 |
| W04 | January 22, 2029 | January 28, 2029 |
| W05 | January 29, 2029 | February 4, 2029 |
| W06 | February 5, 2029 | February 11, 2029 |
| W07 | February 12, 2029 | February 18, 2029 |
| W08 | February 19, 2029 | February 25, 2029 |
| W09 | February 26, 2029 | March 4, 2029 |
| W10 | March 5, 2029 | March 11, 2029 |
| W11 | March 12, 2029 | March 18, 2029 |
| W12 | March 19, 2029 | March 25, 2029 |
| W13 | March 26, 2029 | April 1, 2029 |
| W14 | April 2, 2029 | April 8, 2029 |
| W15 | April 9, 2029 | April 15, 2029 |
| W16 | April 16, 2029 | April 22, 2029 |
| W17 | April 23, 2029 | April 29, 2029 |
| W18 | April 30, 2029 | May 6, 2029 |
| W19 | May 7, 2029 | May 13, 2029 |
| W20 | May 14, 2029 | May 20, 2029 |
| W21 | May 21, 2029 | May 27, 2029 |
| W22 | May 28, 2029 | June 3, 2029 |
| W23 | June 4, 2029 | June 10, 2029 |
| W24 | June 11, 2029 | June 17, 2029 |
| W25 | June 18, 2029 | June 24, 2029 |
| W26 | June 25, 2029 | July 1, 2029 |
| W27 | July 2, 2029 | July 8, 2029 |
| W28 | July 9, 2029 | July 15, 2029 |
| W29 | July 16, 2029 | July 22, 2029 |
| W30 | July 23, 2029 | July 29, 2029 |
| W31 | July 30, 2029 | August 5, 2029 |
| W32 | August 6, 2029 | August 12, 2029 |
| W33 | August 13, 2029 | August 19, 2029 |
| W34 | August 20, 2029 | August 26, 2029 |
| W35 | August 27, 2029 | September 2, 2029 |
| W36 | September 3, 2029 | September 9, 2029 |
| W37 | September 10, 2029 | September 16, 2029 |
| W38 | September 17, 2029 | September 23, 2029 |
| W39 | September 24, 2029 | September 30, 2029 |
| W40 | October 1, 2029 | October 7, 2029 |
| W41 | October 8, 2029 | October 14, 2029 |
| W42 | October 15, 2029 | October 21, 2029 |
| W43 | October 22, 2029 | October 28, 2029 |
| W44 | October 29, 2029 | November 4, 2029 |
| W45 | November 5, 2029 | November 11, 2029 |
| W46 | November 12, 2029 | November 18, 2029 |
| W47 | November 19, 2029 | November 25, 2029 |
| W48 | November 26, 2029 | December 2, 2029 |
| W49 | December 3, 2029 | December 9, 2029 |
| W50 | December 10, 2029 | December 16, 2029 |
| W51 | December 17, 2029 | December 23, 2029 |
| W52 | December 24, 2029 | December 30, 2029 |
| W01 (2030) | December 31, 2029 | January 6, 2030 |