ISO week 2027-W50

Week 50, 2027

Monday, December 13 – Sunday, December 19, 2027

ISO week 50 of 2027 (2027-W50) runs from Monday, December 13, 2027 to Sunday, December 19, 2027.

This week starts 61 weeks from now. The current week is week 42, 2026.

The 7 days of week 50

Dates in week 50, 2027
Day	Date	Day of year	US week	ISO date
Monday	December 13, 2027	347 of 365	51	2027-W50-1
Tuesday	December 14, 2027	348 of 365	51	2027-W50-2
Wednesday	December 15, 2027	349 of 365	51	2027-W50-3
Thursday	December 16, 2027	350 of 365	51	2027-W50-4
Friday	December 17, 2027	351 of 365	51	2027-W50-5
Saturday	December 18, 2027	352 of 365	51	2027-W50-6
Sunday	December 19, 2027	353 of 365	52	2027-W50-7

Week 50 at a glance

ISO code: 2027-W50 (Monday is 2027-W50-1, Sunday is 2027-W50-7)
Month: December
Quarter: Q4 of 2027
Day of year: Days 347–353 of 365
US week number: Monday–Saturday: US week 51; Sunday: US week 52 (Sunday-start weeks, week 1 contains January 1)
Even or odd: Week 50 is an even week
Weeks left: After this week, 2 ISO weeks remain in 2027 (52 weeks in total)
Year progress: By Sunday, 97% of 2027 has passed

Holidays and key dates

There are no US federal holidays, daylight saving time changes or quarter starts in week 50 of 2027.

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 50, 2027

What are the dates of week 50 in 2027?

Week 50 of 2027 starts on Monday, December 13, 2027 and ends on Sunday, December 19, 2027.

What month is week 50 of 2027?

Week 50 falls in December. By the Thursday rule that ISO 8601 uses for years and quarters, it counts as a December week.

How do I get week 50 of 2027 in Excel or Google Sheets?

=ISOWEEKNUM(DATE(2027,12,13)) returns 50. To go the other way, =DATE(2027,1,4)-WEEKDAY(DATE(2027,1,4),2)+1+(50-1)*7 returns the Monday, December 13, 2027.