Week numbers 2024
All 52 ISO weeks of 2024 with their exact dates. 2024 starts on a Monday, has 366 days, and counts 52 calendar weeks. Week 1 begins Jan 1, 2024; week 52 ends Dec 29, 2024.
2024 has 52 ISO weeks. Week 1: Jan 1 – Jan 7, 2024. Week 52: Dec 23 – Dec 29, 2024.
Week number chart 2024
| Week number | From (Monday) | To (Sunday) | Month | Quarter |
|---|---|---|---|---|
| Week 1 | Jan 1 | Jan 7 | January | Q1 |
| Week 2 | Jan 8 | Jan 14 | January | Q1 |
| Week 3 | Jan 15 | Jan 21 | January | Q1 |
| Week 4 | Jan 22 | Jan 28 | January | Q1 |
| Week 5 | Jan 29 | Feb 4 | Jan / Feb | Q1 |
| Week 6 | Feb 5 | Feb 11 | February | Q1 |
| Week 7 | Feb 12 | Feb 18 | February | Q1 |
| Week 8 | Feb 19 | Feb 25 | February | Q1 |
| Week 9 | Feb 26 | Mar 3 | Feb / Mar | Q1 |
| Week 10 | Mar 4 | Mar 10 | March | Q1 |
| Week 11 | Mar 11 | Mar 17 | March | Q1 |
| Week 12 | Mar 18 | Mar 24 | March | Q1 |
| Week 13 | Mar 25 | Mar 31 | March | Q1 |
| Week 14 | Apr 1 | Apr 7 | April | Q2 |
| Week 15 | Apr 8 | Apr 14 | April | Q2 |
| Week 16 | Apr 15 | Apr 21 | April | Q2 |
| Week 17 | Apr 22 | Apr 28 | April | Q2 |
| Week 18 | Apr 29 | May 5 | Apr / May | Q2 |
| Week 19 | May 6 | May 12 | May | Q2 |
| Week 20 | May 13 | May 19 | May | Q2 |
| Week 21 | May 20 | May 26 | May | Q2 |
| Week 22 | May 27 | Jun 2 | May / Jun | Q2 |
| Week 23 | Jun 3 | Jun 9 | June | Q2 |
| Week 24 | Jun 10 | Jun 16 | June | Q2 |
| Week 25 | Jun 17 | Jun 23 | June | Q2 |
| Week 26 | Jun 24 | Jun 30 | June | Q2 |
| Week 27 | Jul 1 | Jul 7 | July | Q3 |
| Week 28 | Jul 8 | Jul 14 | July | Q3 |
| Week 29 | Jul 15 | Jul 21 | July | Q3 |
| Week 30 | Jul 22 | Jul 28 | July | Q3 |
| Week 31 | Jul 29 | Aug 4 | Jul / Aug | Q3 |
| Week 32 | Aug 5 | Aug 11 | August | Q3 |
| Week 33 | Aug 12 | Aug 18 | August | Q3 |
| Week 34 | Aug 19 | Aug 25 | August | Q3 |
| Week 35 | Aug 26 | Sep 1 | Aug / Sep | Q3 |
| Week 36 | Sep 2 | Sep 8 | September | Q3 |
| Week 37 | Sep 9 | Sep 15 | September | Q3 |
| Week 38 | Sep 16 | Sep 22 | September | Q3 |
| Week 39 | Sep 23 | Sep 29 | September | Q3 |
| Week 40 | Sep 30 | Oct 6 | Sep / Oct | Q4 |
| Week 41 | Oct 7 | Oct 13 | October | Q4 |
| Week 42 | Oct 14 | Oct 20 | October | Q4 |
| Week 43 | Oct 21 | Oct 27 | October | Q4 |
| Week 44 | Oct 28 | Nov 3 | Oct / Nov | Q4 |
| Week 45 | Nov 4 | Nov 10 | November | Q4 |
| Week 46 | Nov 11 | Nov 17 | November | Q4 |
| Week 47 | Nov 18 | Nov 24 | November | Q4 |
| Week 48 | Nov 25 | Dec 1 | Nov / Dec | Q4 |
| Week 49 | Dec 2 | Dec 8 | December | Q4 |
| Week 50 | Dec 9 | Dec 15 | December | Q4 |
| Week 51 | Dec 16 | Dec 22 | December | Q4 |
| Week 52 | Dec 23 | Dec 29 | December | Q4 |
Weeks follow ISO 8601 (Monday start, week 1 contains January 4).
2024 week numbers by month
Which ISO weeks fall in each month of 2024, and how many weeks start (on a Monday) in that month.
| Month | Week numbers | Weeks starting | Month starts |
|---|---|---|---|
| January | 1–5 | 5 | Jan 1 (Mon) |
| February | 5–9 | 4 | Feb 1 (Thu) |
| March | 9–13 | 4 | Mar 1 (Fri) |
| April | 14–18 | 5 | Apr 1 (Mon) |
| May | 18–22 | 4 | May 1 (Wed) |
| June | 22–26 | 4 | Jun 1 (Sat) |
| July | 27–31 | 5 | Jul 1 (Mon) |
| August | 31–35 | 4 | Aug 1 (Thu) |
| September | 35–40 | 5 | Sep 1 (Sun) |
| October | 40–44 | 4 | Oct 1 (Tue) |
| November | 44–48 | 4 | Nov 1 (Fri) |
| December | 48–52, 1 (2025) | 5 | Dec 1 (Sun) |
Holidays and key dates 2024 by week number
| Date | Day | ISO week | US week |
|---|---|---|---|
| New Year's Day | Monday, Jan 1, 2024 | Week 1 | Week 1 |
| Valentine's Day | Wednesday, Feb 14, 2024 | Week 7 | Week 7 |
| Easter Sunday | Sunday, Mar 31, 2024 | Week 13 | Week 14 |
| Mother's Day (US) | Sunday, May 12, 2024 | Week 19 | Week 20 |
| Memorial Day (US) | Monday, May 27, 2024 | Week 22 | Week 22 |
| Father's Day (US) | Sunday, Jun 16, 2024 | Week 24 | Week 25 |
| Independence Day (US) | Thursday, Jul 4, 2024 | Week 27 | Week 27 |
| Labor Day (US) | Monday, Sep 2, 2024 | Week 36 | Week 36 |
| Halloween | Thursday, Oct 31, 2024 | Week 44 | Week 44 |
| Thanksgiving (US) | Thursday, Nov 28, 2024 | Week 48 | Week 48 |
| Black Friday | Friday, Nov 29, 2024 | Week 48 | Week 48 |
| Christmas Day | Wednesday, Dec 25, 2024 | Week 52 | Week 52 |
| New Year's Eve | Tuesday, Dec 31, 2024 | Week 1 (2025) | Week 53 |
US (Sunday-start) week numbers in 2024
The chart above uses ISO 8601 (Monday start). US calendars, Outlook in US locale and Excel's default
WEEKNUM() count differently: weeks start on Sunday and week 1 is the week containing
January 1. In 2024, US week 1 runs from Sunday, Dec 31, 2023 to Saturday, Jan 6, 2024,
and the year has 53 US week numbers (the last one is partial).
For Monday–Saturday the US week number is the same as the ISO week number; on Sundays it is one higher (because the US week has already rolled over). To convert any single date, use the week number calculator — it shows both systems. Background: week start conventions.
Other years
Frequently asked questions
How many weeks does 2024 have?
2024 has 52 ISO weeks. Like most years it has 52 numbered weeks; the nearest 53-week years are 2020, 2026.
When does week 1 of 2024 start?
Week 1 of 2024 runs from Monday, Jan 1, 2024 to Sunday, Jan 7, 2024 — it is the week containing January 4. 2024 itself begins on a Monday.
When does the last week of 2024 end?
Week 52, the final week of 2024, runs from Dec 23, 2024 to Dec 29, 2024.
Is 2024 a leap year?
Yes — 2024 has 366 days, which is 52 weeks and 2 days.
What week number is Christmas 2024?
Christmas Day 2024 (Wednesday, Dec 25, 2024) is in ISO week 52 and US week 52. Thanksgiving (Nov 28, 2024) is in ISO week 48, and July 4 is in ISO week 27.
Do US week numbers differ from ISO week numbers in 2024?
Mostly not: from Monday to Saturday the US (Sunday-start) week number equals the ISO week number in 2024; only Sundays are one ahead.