Week 22 in 2009
Week 22 of 2009 begins on May 25, 2009 and ends on May 31, 2009. It covers days 145 to 151 of the year and falls in quarter 2.
Weeks since this week: 906
Week 22 of 2009 at a glance
| Starts (Monday) | May 25, 2009 |
|---|---|
| Ends (Sunday) | May 31, 2009 |
| US week (Sunday to Saturday) | 22 (May 24, 2009) |
| Month | May |
| Quarter | Q2 |
| Days of the year | 145–151 |
| Year completed at the end of this week | 41.4% |
| Weeks left in 2009 after this week | 31 |
| Weeks in 2009 | 53 |
| Even or odd week | Even |
Calendar for May 2009
Download Calendar in printable A4 PDF
(US version) (EU/ISO Version)
All Weeks in 2009:
Past & Future Week Number 22:
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 22 of 2009. It runs from May 24, 2009 to May 30, 2009.
Even and odd weeks
Week 22 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 22 in other years
| From | To | |
|---|---|---|
| Week 22 in 2007 | May 28, 2007 | June 3, 2007 |
| Week 22 in 2008 | May 26, 2008 | June 1, 2008 |
| Week 22 in 2010 | May 31, 2010 | June 6, 2010 |
| Week 22 in 2011 | May 30, 2011 | June 5, 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.
Find the week number of a date
Frequently Asked Questions (FAQ)
When does week 22 of 2009 start and end?
Week 22 of 2009 starts on May 25, 2009 and ends on May 31, 2009 (ISO 8601, Monday to Sunday).
Which month is week 22 of 2009 in?
Week 22 of 2009 is in May.
What dates are in week 22 of 2009?
May 25, 2009, May 26, 2009, May 27, 2009, May 28, 2009, May 29, 2009, May 30, 2009, and May 31, 2009
How many weeks does 2009 have?
2009 has 53 ISO weeks, because 1 January 2009 falls on a Thursday.
Is week 22 an even or odd week?
Week 22 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 22 of 2009. It runs from May 24, 2009 to May 30, 2009.