Week 13 of 2026 runs March 23, 2026 to March 29, 2026.
Week 13 starts on Monday, March 23, 2026 and ends on Sunday, March 29, 2026. It's the 82nd day of the year, sits in Q1, and falls in March. By the end of this week, 88 of 365 days are gone, putting 2026 at 24.1%.
There are no public holidays this week, so all 5 weekdays are working days. Need a different week? Browse the full 2026 week calendar, or jump to this week's number.
Week 13 at a glance
The 7 days of week 13
Every date in week 13 of 2026, Monday through Sunday, with day-of-year numbers and events.
| Day | Date | Day no. | Type | Events |
|---|---|---|---|---|
| Monday | Day 82 | Weekday | ||
| Tuesday | Day 83 | Weekday | ||
| Wednesday | Day 84 | Weekday | ||
| Thursday | Day 85 | Weekday | ||
| Friday | Day 86 | Weekday | ||
| Saturday | Day 87 | Weekend | ||
| Sunday | Day 88 | Weekend |
What week 13 of 2026 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 13 is one piece of that system.
In 2026, week 13 covers Mar 23 – Mar 29, 2026. That's March, deep in Q1. The same week number shifts by a day or two each year, so week 13 in 2027 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 13 of 2026
🇬🇧 United Kingdom
Daylight Saving Time — Spring Forward
ObservanceWeek 13 across years
The same ISO week number lands on different dates each year. Here's how week 13 shifts.
| Year | From (Mon) | To (Sun) | Notable | |
|---|---|---|---|---|
| 2024 | Good Friday Easter Sunday | view → | ||
| 2025 | view → | |||
| 2026 THIS YEAR | ||||
| 2027 | Easter Monday | view → | ||
| 2028 | view → | |||
| 2029 | Good Friday Easter Sunday | view → |
Week 13 of 2026: questions and answers
What days are in week 13 of 2026?
Week 13 of 2026 runs from March 23, 2026 (Monday) through March 29, 2026 (Sunday). It spans March.
What month is week 13 in 2026?
Week 13 of 2026 falls entirely in March 2026.
How many working days are in week 13 of 2026?
Week 13 of 2026 has 5 working days.
What quarter is week 13 of 2026 in?
Week 13 of 2026 is in Q1 (2026). The week starts on day 82 of 365.
What is ISO week 13?
ISO week 13 is defined by the ISO 8601 international standard. It begins on Monday, March 23, 2026, and ends on Sunday, March 29, 2026. It is week 25% through the ISO year 2026.