Week 41 in 2009
Week 41 of 2009 begins on October 5, 2009 and ends on October 11, 2009. It covers days 278 to 284 of the year and falls in quarter 4.
Weeks since this week: 886
Week 41 of 2009 at a glance
| Starts (Monday) | October 5, 2009 |
|---|---|
| Ends (Sunday) | October 11, 2009 |
| US week (Sunday to Saturday) | 41 (October 4, 2009) |
| Month | October |
| Quarter | Q4 |
| Days of the year | 278–284 |
| Year completed at the end of this week | 77.8% |
| Weeks left in 2009 after this week | 12 |
| Weeks in 2009 | 53 |
| Even or odd week | Odd |
Calendar for October 2009
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(US version) (EU/ISO Version)
All Weeks in 2009:
Past & Future Week Number 41:
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 2009. It runs from October 4, 2009 to October 10, 2009.
Even and odd weeks
Week 41 is an odd week. Even and odd week numbers are used for alternating schedules such as shift rotas, school timetables, custody arrangements and waste collection.
Week 41 in other years
| From | To | |
|---|---|---|
| Week 41 in 2007 | October 8, 2007 | October 14, 2007 |
| Week 41 in 2008 | October 6, 2008 | October 12, 2008 |
| Week 41 in 2010 | October 11, 2010 | October 17, 2010 |
| Week 41 in 2011 | October 10, 2011 | October 16, 2011 |
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 2009 began on December 29, 2008. 2009 has 53 ISO weeks, because 1 January 2009 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.
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Frequently Asked Questions (FAQ)
When does week 41 of 2009 start and end?
Week 41 of 2009 starts on October 5, 2009 and ends on October 11, 2009 (ISO 8601, Monday to Sunday).
Which month is week 41 of 2009 in?
Week 41 of 2009 is in October.
What dates are in week 41 of 2009?
October 5, 2009, October 6, 2009, October 7, 2009, October 8, 2009, October 9, 2009, October 10, 2009, and October 11, 2009
How many weeks does 2009 have?
2009 has 53 ISO weeks, because 1 January 2009 falls on a Thursday.
Is week 41 an even or odd week?
Week 41 is an odd 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 2009. It runs from October 4, 2009 to October 10, 2009.