Week 42 of 2027 runs October 18, 2027 to October 24, 2027.
Week 42 starts on Monday, October 18, 2027 and ends on Sunday, October 24, 2027. It's the 291st day of the year, sits in Q4, and falls in October. By the end of this week, 297 of 365 days are gone, putting 2027 at 81.4%.
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 42 at a glance
The 7 days of week 42
Every date in week 42 of 2027, Monday through Sunday, with day-of-year numbers and events.
| Day | Date | Day no. | Type | Events |
|---|---|---|---|---|
| Monday | Day 291 | Weekday | ||
| Tuesday | Day 292 | Weekday | ||
| Wednesday | Day 293 | Weekday | ||
| Thursday | Day 294 | Weekday | ||
| Friday | Day 295 | Weekday | ||
| Saturday | Day 296 | Weekend | ||
| Sunday | Day 297 | Weekend |
What week 42 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 42 is one piece of that system.
In 2027, week 42 covers Oct 18 – Oct 24, 2027. That's October, deep in Q4. The same week number shifts by a day or two each year, so week 42 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 42 of 2027
No major public holidays in week 42 of 2027 across the US, UK, Canada, or Australia.
Week 42 across years
The same ISO week number lands on different dates each year. Here's how week 42 shifts.
| Year | From (Mon) | To (Sun) | Notable | |
|---|---|---|---|---|
| 2024 | Columbus Day / Indigenous Peoples' Day | view → | ||
| 2025 | Columbus Day / Indigenous Peoples' Day | view → | ||
| 2026 | Columbus Day / Indigenous Peoples' Day | view → | ||
| 2027 THIS YEAR | ||||
| 2028 | view → | |||
| 2029 | view → | |||
| 2030 | Columbus Day / Indigenous Peoples' Day | view → |
Week 42 of 2027: questions and answers
What days are in week 42 of 2027?
Week 42 of 2027 runs from October 18, 2027 (Monday) through October 24, 2027 (Sunday). It spans October.
What month is week 42 in 2027?
Week 42 of 2027 falls entirely in October 2027.
How many working days are in week 42 of 2027?
Week 42 of 2027 has 5 working days.
What quarter is week 42 of 2027 in?
Week 42 of 2027 is in Q4 (2027). The week starts on day 291 of 365.
What is ISO week 42?
ISO week 42 is defined by the ISO 8601 international standard. It begins on Monday, October 18, 2027, and ends on Sunday, October 24, 2027. It is week 81% through the ISO year 2027.