Week 16 in 421
Week 16 of 421 begins on April 19, 421 and ends on April 25, 421. It covers days 109 to 115 of the year and falls in quarter 2.
Weeks since this week: 83768
Week 16 of 421 at a glance
| Starts (Monday) | April 19, 421 |
|---|---|
| Ends (Sunday) | April 25, 421 |
| US week (Sunday to Saturday) | 17 (April 18, 421) |
| Month | April |
| Quarter | Q2 |
| Days of the year | 109–115 |
| Year completed at the end of this week | 31.5% |
| Weeks left in 421 after this week | 36 |
| Weeks in 421 | 52 |
| Even or odd week | Even |
Calendar for April 421
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(US version) (EU/ISO Version)
All Weeks in 421:
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 17 of 421. It runs from April 18, 421 to April 24, 421.
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 419 | April 15, 419 | April 21, 419 |
| Week 16 in 420 | April 13, 420 | April 19, 420 |
| Week 16 in 422 | April 18, 422 | April 24, 422 |
| Week 16 in 423 | April 17, 423 | April 23, 423 |
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 421 began on January 4, 421. 421 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 421 start and end?
Week 16 of 421 starts on April 19, 421 and ends on April 25, 421 (ISO 8601, Monday to Sunday).
Which month is week 16 of 421 in?
Week 16 of 421 is in April.
What dates are in week 16 of 421?
April 19, 421, April 20, 421, April 21, 421, April 22, 421, April 23, 421, April 24, 421, and April 25, 421
How many weeks does 421 have?
421 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 17 of 421. It runs from April 18, 421 to April 24, 421.