Week 18 of 2027 runs May 3, 2027 to May 9, 2027.
Week 18 starts on Monday, May 3, 2027 and ends on Sunday, May 9, 2027. It's the 123rd day of the year, sits in Q2, and falls in May. By the end of this week, 129 of 365 days are gone, putting 2027 at 35.3%.
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 18 at a glance
The 7 days of week 18
Every date in week 18 of 2027, Monday through Sunday, with day-of-year numbers and events.
| Day | Date | Day no. | Type | Events |
|---|---|---|---|---|
| Monday | Day 123 | Weekday | ||
| Tuesday | Day 124 | Weekday | ||
| Wednesday | Day 125 | Weekday | ||
| Thursday | Day 126 | Weekday | ||
| Friday | Day 127 | Weekday | ||
| Saturday | Day 128 | Weekend | ||
| Sunday | Day 129 | Weekend |
What week 18 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 18 is one piece of that system.
In 2027, week 18 covers May 3 – May 9, 2027. That's May, deep in Q2. The same week number shifts by a day or two each year, so week 18 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 18 of 2027
🇺🇸 United States
🇬🇧 United Kingdom
Early May Bank Holiday
BankWeek 18 across years
The same ISO week number lands on different dates each year. Here's how week 18 shifts.
Week 18 of 2027: questions and answers
What days are in week 18 of 2027?
Week 18 of 2027 runs from May 3, 2027 (Monday) through May 9, 2027 (Sunday). It spans May.
What month is week 18 in 2027?
Week 18 of 2027 falls entirely in May 2027.
How many working days are in week 18 of 2027?
Week 18 of 2027 has 5 working days.
What quarter is week 18 of 2027 in?
Week 18 of 2027 is in Q2 (2027). The week starts on day 123 of 365.
What is ISO week 18?
ISO week 18 is defined by the ISO 8601 international standard. It begins on Monday, May 3, 2027, and ends on Sunday, May 9, 2027. It is week 35% through the ISO year 2027.