ISO week 2027-W13

Week 13, 2027

Monday, March 29 – Sunday, April 4, 2027

ISO week 13 of 2027 (2027-W13) runs from Monday, March 29, 2027 to Sunday, April 4, 2027.

This week starts 24 weeks from now. The current week is week 42, 2026.

The 7 days of week 13

Dates in week 13, 2027
Day	Date	Day of year	US week	ISO date
Monday	March 29, 2027	88 of 365	14	2027-W13-1
Tuesday	March 30, 2027	89 of 365	14	2027-W13-2
Wednesday	March 31, 2027	90 of 365	14	2027-W13-3
Thursday	April 1, 2027	91 of 365	14	2027-W13-4
Friday	April 2, 2027	92 of 365	14	2027-W13-5
Saturday	April 3, 2027	93 of 365	14	2027-W13-6
Sunday	April 4, 2027	94 of 365	15	2027-W13-7

Week 13 at a glance

ISO code: 2027-W13 (Monday is 2027-W13-1, Sunday is 2027-W13-7)
Month: March and April
Quarter: Q2 by the ISO rule (its Thursday, April 1, is in Q2); the calendar dates span Q1 and Q2
Day of year: Days 88–94 of 365
US week number: Monday–Saturday: US week 14; Sunday: US week 15 (Sunday-start weeks, week 1 contains January 1)
Even or odd: Week 13 is an odd week
Weeks left: After this week, 39 ISO weeks remain in 2027 (52 weeks in total)
Year progress: By Sunday, 26% of 2027 has passed

Holidays and key dates

Thursday, April 1: Q2 begins

Week numbers follow ISO 8601: weeks start on Monday and week 1 contains the first Thursday of the year. US weeks start on Sunday, with week 1 containing January 1.

Questions about week 13, 2027

What are the dates of week 13 in 2027?

Week 13 of 2027 starts on Monday, March 29, 2027 and ends on Sunday, April 4, 2027.

What month is week 13 of 2027?

Week 13 falls in March and April. By the Thursday rule that ISO 8601 uses for years and quarters, it counts as a April week.

How do I get week 13 of 2027 in Excel or Google Sheets?

=ISOWEEKNUM(DATE(2027,3,29)) returns 13. To go the other way, =DATE(2027,1,4)-WEEKDAY(DATE(2027,1,4),2)+1+(13-1)*7 returns the Monday, March 29, 2027.