Week 39 of 2027 runs September 27, 2027 to October 3, 2027.
Week 39 starts on Monday, September 27, 2027 and ends on Sunday, October 3, 2027. It's the 270th day of the year, sits in Q3, and falls in September / October. By the end of this week, 276 of 365 days are gone, putting 2027 at 75.6%.
There are no public holidays this week, so all 5 weekdays are working days. Need a different week? Browse the full 2027 week calendar, or jump to this week's number.
Week 39 at a glance
The 7 days of week 39
Every date in week 39 of 2027, Monday through Sunday, with day-of-year numbers and events.
| Day | Date | Day no. | Type | Events |
|---|---|---|---|---|
| Monday | Day 270 | Weekday | ||
| Tuesday | Day 271 | Weekday | ||
| Wednesday | Day 272 | Weekday | ||
| Thursday | Day 273 | Weekday | ||
| Friday | Day 274 | Weekday | ||
| Saturday | Day 275 | Weekend | ||
| Sunday | Day 276 | Weekend |
What week 39 of 2027 means
ISO 8601 numbers weeks so every week starts on Monday and ends on Sunday. Week 1 is the one holding the year's first Thursday, which is why early January can land in week 52 or 53 of the previous year. Week 39 is one piece of that system.
In 2027, week 39 covers Sep 27 – Oct 3, 2027. That's September / October, deep in Q3. The same week number shifts by a day or two each year, so week 39 in 2028 won't share these exact dates. The table below shows how it moves.
Want to check a specific date instead of a week number? The week calculator converts any date to its ISO week. Curious how many weeks a year holds? The weeks in a year guide explains 52 versus 53. And the ISO week number page covers the standard end to end.
Holidays in week 39 of 2027
🇨🇦 Canada
National Day for Truth and Reconciliation
FederalWeek 39 across years
The same ISO week number lands on different dates each year. Here's how week 39 shifts.
Week 39 of 2027: questions and answers
What days are in week 39 of 2027?
Week 39 of 2027 runs from September 27, 2027 (Monday) through October 3, 2027 (Sunday). It spans September / October.
What month is week 39 in 2027?
Week 39 of 2027 spans two months: it starts in September and ends in October 2027.
How many working days are in week 39 of 2027?
Week 39 of 2027 has 5 working days.
What quarter is week 39 of 2027 in?
Week 39 of 2027 is in Q3 (2027). The week starts on day 270 of 365.
What is ISO week 39?
ISO week 39 is defined by the ISO 8601 international standard. It begins on Monday, September 27, 2027, and ends on Sunday, October 3, 2027. It is week 75% through the ISO year 2027.