Week 52 in 2009
Week 52 of 2009 begins on December 21, 2009 and ends on December 27, 2009. It covers days 355 to 361 of the year and falls in quarter 4.
Weeks since this week: 874
Week 52 of 2009 at a glance
| Starts (Monday) | December 21, 2009 |
|---|---|
| Ends (Sunday) | December 27, 2009 |
| US week (Sunday to Saturday) | 52 (December 20, 2009) |
| Month | December |
| Quarter | Q4 |
| Days of the year | 355–361 |
| Year completed at the end of this week | 98.9% |
| Weeks left in 2009 after this week | 1 |
| Weeks in 2009 | 53 |
| Even or odd week | Even |
Calendar for December 2009
Download Calendar in printable A4 PDF
(US version) (EU/ISO Version)
All Weeks in 2009:
Past & Future Week Number 52:
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 52 of 2009. It runs from December 20, 2009 to December 26, 2009.
Even and odd weeks
Week 52 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 52 in other years
| From | To | |
|---|---|---|
| Week 52 in 2007 | December 24, 2007 | December 30, 2007 |
| Week 52 in 2008 | December 22, 2008 | December 28, 2008 |
| Week 52 in 2010 | December 27, 2010 | January 2, 2011 |
| Week 52 in 2011 | December 26, 2011 | January 1, 2012 |
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.
Find the week number of a date
Frequently Asked Questions (FAQ)
When does week 52 of 2009 start and end?
Week 52 of 2009 starts on December 21, 2009 and ends on December 27, 2009 (ISO 8601, Monday to Sunday).
Which month is week 52 of 2009 in?
Week 52 of 2009 is in December.
What dates are in week 52 of 2009?
December 21, 2009, December 22, 2009, December 23, 2009, December 24, 2009, December 25, 2009, December 26, 2009, and December 27, 2009
How many weeks does 2009 have?
2009 has 53 ISO weeks, because 1 January 2009 falls on a Thursday.
Is week 52 an even or odd week?
Week 52 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 52 of 2009. It runs from December 20, 2009 to December 26, 2009.