Week 16 in 221
Week 16 of 221 begins on April 16, 221 and ends on April 22, 221. It covers days 106 to 112 of the year and falls in quarter 2.
Weeks since this week: 94204
Week 16 of 221 at a glance
| Starts (Monday) | April 16, 221 |
|---|---|
| Ends (Sunday) | April 22, 221 |
| US week (Sunday to Saturday) | 16 (April 15, 221) |
| Month | April |
| Quarter | Q2 |
| Days of the year | 106–112 |
| Year completed at the end of this week | 30.7% |
| Weeks left in 221 after this week | 36 |
| Weeks in 221 | 52 |
| Even or odd week | Even |
Calendar for April 221
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(US version) (EU/ISO Version)
All Weeks in 221:
Past & Future Week Number 16:
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 16 of 221. It runs from April 15, 221 to April 21, 221.
Even and odd weeks
Week 16 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 16 in other years
| From | To | |
|---|---|---|
| Week 16 in 219 | April 19, 219 | April 25, 219 |
| Week 16 in 220 | April 17, 220 | April 23, 220 |
| Week 16 in 222 | April 15, 222 | April 21, 222 |
| Week 16 in 223 | April 14, 223 | April 20, 223 |
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 221 began on January 1, 221. 221 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 16 of 221 start and end?
Week 16 of 221 starts on April 16, 221 and ends on April 22, 221 (ISO 8601, Monday to Sunday).
Which month is week 16 of 221 in?
Week 16 of 221 is in April.
What dates are in week 16 of 221?
April 16, 221, April 17, 221, April 18, 221, April 19, 221, April 20, 221, April 21, 221, and April 22, 221
How many weeks does 221 have?
221 has 52 ISO weeks.
Is week 16 an even or odd week?
Week 16 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 16 of 221. It runs from April 15, 221 to April 21, 221.