Week 51 of 2020 runs December 14, 2020 to December 20, 2020.
Week 51 starts on Monday, December 14, 2020 and ends on Sunday, December 20, 2020. It's the 349th day of the year, sits in Q4, and falls in December. By the end of this week, 355 of 366 days are gone, putting 2020 at 97%.
There are no public holidays this week, so all 5 weekdays are working days. Need a different week? Browse the full 2020 week calendar, or jump to this week's number.
Week 51 at a glance
The 7 days of week 51
Every date in week 51 of 2020, Monday through Sunday, with day-of-year numbers and events.
| Day | Date | Day no. | Type | Events |
|---|---|---|---|---|
| Monday | Day 349 | Weekday | ||
| Tuesday | Day 350 | Weekday | ||
| Wednesday | Day 351 | Weekday | ||
| Thursday | Day 352 | Weekday | ||
| Friday | Day 353 | Weekday | ||
| Saturday | Day 354 | Weekend | ||
| Sunday | Day 355 | Weekend |
What week 51 of 2020 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 51 is one piece of that system.
In 2020, week 51 covers Dec 14 – Dec 20, 2020. That's December, deep in Q4. The same week number shifts by a day or two each year, so week 51 in 2021 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 51 of 2020
No major public holidays in week 51 of 2020 across the US, UK, Canada, or Australia.
Week 51 across years
The same ISO week number lands on different dates each year. Here's how week 51 shifts.
Week 51 of 2020: questions and answers
What days are in week 51 of 2020?
Week 51 of 2020 runs from December 14, 2020 (Monday) through December 20, 2020 (Sunday). It spans December.
What month is week 51 in 2020?
Week 51 of 2020 falls entirely in December 2020.
How many working days are in week 51 of 2020?
Week 51 of 2020 has 5 working days.
What quarter is week 51 of 2020 in?
Week 51 of 2020 is in Q4 (2020). The week starts on day 349 of 366.
What is ISO week 51?
ISO week 51 is defined by the ISO 8601 international standard. It begins on Monday, December 14, 2020, and ends on Sunday, December 20, 2020. It is week 96% through the ISO year 2020.