Week 43 of 2027: Dates
Week 43 of 2027 starts on Monday, October 25, 2027 and ends on Sunday, October 31, 2027. It falls in October, in the fourth quarter of 2027.
The days of week 43, 2027
| Day | Date | Day of year | US federal holiday |
|---|---|---|---|
| Monday | October 25, 2027 | Day 298 | |
| Tuesday | October 26, 2027 | Day 299 | |
| Wednesday | October 27, 2027 | Day 300 | |
| Thursday | October 28, 2027 | Day 301 | |
| Friday | October 29, 2027 | Day 302 | |
| Saturday | October 30, 2027 | Day 303 | |
| Sunday | October 31, 2027 | Day 304 |
Other days in this week: Diwali, Halloween, October Bank Holiday (Ireland), Labour Day (New Zealand), Reformation Day.
ISO and US week numbers
Week 43 covers days 298 to 304 of 2027. US calendars start the week a day earlier, on Sunday, October 24. On that count the same Monday is in week 44 of 2027, one off from the ISO number. To check it in Excel or Google Sheets, =ISOWEEKNUM(DATE(2027,10,25)) returns 43 and =WEEKNUM(DATE(2027,10,25)) returns 44.
Week 43 by year
| Year | Monday | Sunday |
|---|---|---|
| 2027 | October 25, 2027 | October 31, 2027 |
| 2028 | October 23, 2028 | October 29, 2028 |
| 2029 | October 22, 2029 | October 28, 2029 |
| 2030 | October 21, 2030 | October 27, 2030 |
| 2031 | October 20, 2031 | October 26, 2031 |
| 2032 | October 18, 2032 | October 24, 2032 |
This page shows the next week 43 that has not ended yet. ISO weeks start on Monday, and week 1 contains the year's first Thursday.
Week 43 questions
When does week 43 of 2027 start?
On Monday, October 25, 2027. It ends on Sunday, October 31, 2027, seven days later.
Does every year have a week 43?
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 26). Week 43 of 2027: Dates. https://clocktotals.com/week-number/43/
MLA: “Week 43 of 2027: Dates.” ClockTotals, 26 Oct. 2026, clocktotals.com/week-number/43/.
Link (HTML): <a href="https://clocktotals.com/week-number/43/">Week 43 of 2027: Dates</a>