Week 12 of 2027: Dates
Week 12 of 2027 starts on Monday, March 22, 2027 and ends on Sunday, March 28, 2027. It falls in March, in the first quarter of 2027.
The days of week 12, 2027
| Day | Date | Day of year | US federal holiday |
|---|---|---|---|
| Monday | March 22, 2027 | Day 81 | |
| Tuesday | March 23, 2027 | Day 82 | |
| Wednesday | March 24, 2027 | Day 83 | |
| Thursday | March 25, 2027 | Day 84 | |
| Friday | March 26, 2027 | Day 85 | |
| Saturday | March 27, 2027 | Day 86 | |
| Sunday | March 28, 2027 | Day 87 |
Other days in this week: Good Friday, Easter, Purim, Maundy Thursday, Holi, World Water Day, Holy Saturday, Pakistan Day, Independence Day (Bangladesh).
ISO and US week numbers
Week 12 covers days 81 to 87 of 2027. US calendars start the week a day earlier, on Sunday, March 21. On that count the same Monday is in week 13 of 2027, one off from the ISO number. To check it in Excel or Google Sheets, =ISOWEEKNUM(DATE(2027,3,22)) returns 12 and =WEEKNUM(DATE(2027,3,22)) returns 13.
Week 12 by year
| Year | Monday | Sunday |
|---|---|---|
| 2027 | March 22, 2027 | March 28, 2027 |
| 2028 | March 20, 2028 | March 26, 2028 |
| 2029 | March 19, 2029 | March 25, 2029 |
| 2030 | March 18, 2030 | March 24, 2030 |
| 2031 | March 17, 2031 | March 23, 2031 |
| 2032 | March 15, 2032 | March 21, 2032 |
This page shows the next week 12 that has not ended yet. ISO weeks start on Monday, and week 1 contains the year's first Thursday.
Week 12 questions
When does week 12 of 2027 start?
On Monday, March 22, 2027. It ends on Sunday, March 28, 2027, seven days later.
Does every year have a week 12?
Yes. Every ISO year has weeks 1 to 52, and only some have a week 53.
Related pages
Cite this page
APA: ClockTotals. (2026, October 28). Week 12 of 2027: Dates. https://clocktotals.com/week-number/12/
MLA: “Week 12 of 2027: Dates.” ClockTotals, 28 Oct. 2026, clocktotals.com/week-number/12/.
Link (HTML): <a href="https://clocktotals.com/week-number/12/">Week 12 of 2027: Dates</a>