Week 40 in 1521
Week 40 of 1521 begins on October 3, 1521 and ends on October 9, 1521. It covers days 276 to 282 of the year and falls in quarter 4.
Weeks since this week: 26349
Week 40 of 1521 at a glance
| Starts (Monday) | October 3, 1521 |
|---|---|
| Ends (Sunday) | October 9, 1521 |
| US week (Sunday to Saturday) | 41 (October 2, 1521) |
| Month | October |
| Quarter | Q4 |
| Days of the year | 276–282 |
| Year completed at the end of this week | 77.3% |
| Weeks left in 1521 after this week | 12 |
| Weeks in 1521 | 52 |
| Even or odd week | Even |
Calendar for October 1521
Download Calendar in printable A4 PDF
(US version) (EU/ISO Version)
All Weeks in 1521:
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 41 of 1521. It runs from October 2, 1521 to October 8, 1521.
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 1519 | September 29, 1519 | October 5, 1519 |
| Week 40 in 1520 | September 27, 1520 | October 3, 1520 |
| Week 40 in 1522 | October 2, 1522 | October 8, 1522 |
| Week 40 in 1523 | October 1, 1523 | October 7, 1523 |
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 1521 began on January 3, 1521. 1521 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 1521 start and end?
Week 40 of 1521 starts on October 3, 1521 and ends on October 9, 1521 (ISO 8601, Monday to Sunday).
Which month is week 40 of 1521 in?
Week 40 of 1521 is in October.
What dates are in week 40 of 1521?
October 3, 1521, October 4, 1521, October 5, 1521, October 6, 1521, October 7, 1521, October 8, 1521, and October 9, 1521
How many weeks does 1521 have?
1521 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 41 of 1521. It runs from October 2, 1521 to October 8, 1521.