Week 18 of 2025 runs April 28, 2025 to May 4, 2025.
Week 18 starts on Monday, April 28, 2025 and ends on Sunday, May 4, 2025. It's the 118th day of the year, sits in Q2, and falls in April / May. By the end of this week, 124 of 365 days are gone, putting 2025 at 34%.
There are no public holidays this week, so all 5 weekdays are working days. Need a different week? Browse the full 2025 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 2025, Monday through Sunday, with day-of-year numbers and events.
| Day | Date | Day no. | Type | Events |
|---|---|---|---|---|
| Monday | Day 118 | Weekday | ||
| Tuesday | Day 119 | Weekday | ||
| Wednesday | Day 120 | Weekday | ||
| Thursday | Day 121 | Weekday | ||
| Friday | Day 122 | Weekday | ||
| Saturday | Day 123 | Weekend | ||
| Sunday | Day 124 | Weekend |
What week 18 of 2025 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 2025, week 18 covers Apr 28 – May 4, 2025. That's April / May, deep in Q2. The same week number shifts by a day or two each year, so week 18 in 2026 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 2025
No major public holidays in week 18 of 2025 across the US, UK, Canada, or Australia.
Week 18 across years
The same ISO week number lands on different dates each year. Here's how week 18 shifts.
Week 18 of 2025: questions and answers
What days are in week 18 of 2025?
Week 18 of 2025 runs from April 28, 2025 (Monday) through May 4, 2025 (Sunday). It spans April / May.
What month is week 18 in 2025?
Week 18 of 2025 spans two months: it starts in April and ends in May 2025.
How many working days are in week 18 of 2025?
Week 18 of 2025 has 5 working days.
What quarter is week 18 of 2025 in?
Week 18 of 2025 is in Q2 (2025). The week starts on day 118 of 365.
What is ISO week 18?
ISO week 18 is defined by the ISO 8601 international standard. It begins on Monday, April 28, 2025, and ends on Sunday, May 4, 2025. It is week 35% through the ISO year 2025.