ISO Week · 2026 · Q4
Week 53
2026 · –
December / January · 5 working days · 100% through 2026
Week 53 of 2026 runs December 28, 2026 to January 3, 2027.
Week 53 starts on Monday, December 28, 2026 and ends on Sunday, January 3, 2027. It's the 362nd day of the year, sits in Q4, and falls in December / January. By the end of this week, 3 of 365 days are gone, putting 2026 at 0.8%.
This week includes New Year's Eve, so it has 5 working days instead of the usual 5. Need a different week? Browse the full 2026 week calendar, or jump to this week's number.
Week 53 at a glance
The 7 days of week 53
Every date in week 53 of 2026, Monday through Sunday, with day-of-year numbers and events.
| Day | Date | Day no. | Type | Events |
|---|---|---|---|---|
| Monday | Day 362 | Weekday | ||
| Tuesday | Day 363 | Weekday | ||
| Wednesday | Day 364 | Weekday | ||
| Thursday | Day 365 | Weekday | New Year's Eve | |
| Friday | Day 1 | Weekday | ||
| Saturday | Day 2 | Weekend | ||
| Sunday | Day 3 | Weekend |
What week 53 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 53 is one piece of that system.
In 2026, week 53 covers Dec 28 – Jan 3, 2027. That's December / January, deep in Q4. The same week number shifts by a day or two each year, so week 53 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 53 of 2026
🇺🇸 United States
🇨🇦 Canada
🇦🇺 Australia
Week 53 across years
The same ISO week number lands on different dates each year. Here's how week 53 shifts.
| Year | From (Mon) | To (Sun) | Notable | |
|---|---|---|---|---|
| 2026 THIS YEAR |
Week 53 of 2026: questions and answers
What days are in week 53 of 2026?
Week 53 of 2026 runs from December 28, 2026 (Monday) through January 3, 2027 (Sunday). It spans December / January.
What month is week 53 in 2026?
Week 53 of 2026 spans two months: it starts in December and ends in January 2026.
How many working days are in week 53 of 2026?
Week 53 of 2026 has 5 working days.
What week is New Year's Eve in 2026?
New Year's Eve falls in ISO week 53 of 2026 (Dec 28 – Jan 3, 2027).
What quarter is week 53 of 2026 in?
Week 53 of 2026 is in Q4 (2026). The week starts on day 362 of 365.
What is ISO week 53?
ISO week 53 is defined by the ISO 8601 international standard. It begins on Monday, December 28, 2026, and ends on Sunday, January 3, 2027. It is week 100% through the ISO year 2026.