Week 50 in 1981
Week 50 of 1981 begins on December 7, 1981 and ends on December 13, 1981. It covers days 341 to 347 of the year and falls in quarter 4.
Weeks since this week: 2338
Week 50 of 1981 at a glance
| Starts (Monday) | December 7, 1981 |
|---|---|
| Ends (Sunday) | December 13, 1981 |
| US week (Sunday to Saturday) | 50 (December 6, 1981) |
| Month | December |
| Quarter | Q4 |
| Days of the year | 341–347 |
| Year completed at the end of this week | 95.1% |
| Weeks left in 1981 after this week | 3 |
| Weeks in 1981 | 53 |
| Even or odd week | Even |
Calendar for December 1981
Download Calendar in printable A4 PDF
(US version) (EU/ISO Version)
All Weeks in 1981:
Past & Future Week Number 50:
US and ISO week numbers
In the US system, where weeks start on Sunday and week 1 is the week that contains 1 January, this is week 50 of 1981. It runs from December 6, 1981 to December 12, 1981.
Even and odd weeks
Week 50 is an even week. Even and odd week numbers are used for alternating schedules such as shift rotas, school timetables, custody arrangements and waste collection.
Week 50 in other years
| From | To | |
|---|---|---|
| Week 50 in 1979 | December 10, 1979 | December 16, 1979 |
| Week 50 in 1980 | December 8, 1980 | December 14, 1980 |
| Week 50 in 1982 | December 13, 1982 | December 19, 1982 |
| Week 50 in 1983 | December 12, 1983 | December 18, 1983 |
How week numbers are counted
Most of the world numbers weeks according to the ISO 8601 standard. A week starts on Monday, and week 1 is the week that contains the first Thursday of the year, which is always the week that contains 4 January.
Week 1 of 1981 began on December 29, 1980. 1981 has 53 ISO weeks, because 1 January 1981 falls on a Thursday.
Because of this rule, the first days of January can belong to the last week of the previous year, and the last days of December can belong to week 1 of the next year.
In the United States, weeks usually start on Sunday and week 1 is the week that contains 1 January, so the US week number can differ from the ISO week number.
Find the week number of a date
Frequently Asked Questions (FAQ)
When does week 50 of 1981 start and end?
Week 50 of 1981 starts on December 7, 1981 and ends on December 13, 1981 (ISO 8601, Monday to Sunday).
Which month is week 50 of 1981 in?
Week 50 of 1981 is in December.
What dates are in week 50 of 1981?
December 7, 1981, December 8, 1981, December 9, 1981, December 10, 1981, December 11, 1981, December 12, 1981, and December 13, 1981
How many weeks does 1981 have?
1981 has 53 ISO weeks, because 1 January 1981 falls on a Thursday.
Is week 50 an even or odd week?
Week 50 is an even week.
What is the US week number for this week?
In the US system, where weeks start on Sunday and week 1 is the week that contains 1 January, this is week 50 of 1981. It runs from December 6, 1981 to December 12, 1981.