Week 40 in 1985
Week 40 of 1985 begins on September 30, 1985 and ends on October 6, 1985. It covers days 273 to 279 of the year and falls in quarter 3.
Weeks since this week: 2140
Week 40 of 1985 at a glance
| Starts (Monday) | September 30, 1985 |
|---|---|
| Ends (Sunday) | October 6, 1985 |
| US week (Sunday to Saturday) | 40 (September 29, 1985) |
| Month | September / October |
| Quarter | Q3 |
| Days of the year | 273–279 |
| Year completed at the end of this week | 76.4% |
| Weeks left in 1985 after this week | 12 |
| Weeks in 1985 | 52 |
| Even or odd week | Even |
Calendar for September 1985
Download Calendar in printable A4 PDF
(US version) (EU/ISO Version)
All Weeks in 1985:
Past & Future Week Number 40:
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 40 of 1985. It runs from September 29, 1985 to October 5, 1985.
Even and odd weeks
Week 40 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 40 in other years
| From | To | |
|---|---|---|
| Week 40 in 1983 | October 3, 1983 | October 9, 1983 |
| Week 40 in 1984 | October 1, 1984 | October 7, 1984 |
| Week 40 in 1986 | September 29, 1986 | October 5, 1986 |
| Week 40 in 1987 | September 28, 1987 | October 4, 1987 |
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 1985 began on December 31, 1984. 1985 has 52 ISO weeks.
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 40 of 1985 start and end?
Week 40 of 1985 starts on September 30, 1985 and ends on October 6, 1985 (ISO 8601, Monday to Sunday).
Which month is week 40 of 1985 in?
Week 40 of 1985 starts in September and ends in October.
What dates are in week 40 of 1985?
September 30, 1985, October 1, 1985, October 2, 1985, October 3, 1985, October 4, 1985, October 5, 1985, and October 6, 1985
How many weeks does 1985 have?
1985 has 52 ISO weeks.
Is week 40 an even or odd week?
Week 40 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 40 of 1985. It runs from September 29, 1985 to October 5, 1985.