Week 16 in 1643
Week 16 of 1643 begins on April 13, 1643 and ends on April 19, 1643. It covers days 103 to 109 of the year and falls in quarter 2.
Weeks since this week: 20007
Week 16 of 1643 at a glance
| Starts (Monday) | April 13, 1643 |
|---|---|
| Ends (Sunday) | April 19, 1643 |
| US week (Sunday to Saturday) | 16 (April 12, 1643) |
| Month | April |
| Quarter | Q2 |
| Days of the year | 103–109 |
| Year completed at the end of this week | 29.9% |
| Weeks left in 1643 after this week | 37 |
| Weeks in 1643 | 53 |
| Even or odd week | Even |
Calendar for April 1643
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(US version) (EU/ISO Version)
All Weeks in 1643:
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 1643. It runs from April 12, 1643 to April 18, 1643.
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 1641 | April 15, 1641 | April 21, 1641 |
| Week 16 in 1642 | April 14, 1642 | April 20, 1642 |
| Week 16 in 1644 | April 18, 1644 | April 24, 1644 |
| Week 16 in 1645 | April 17, 1645 | April 23, 1645 |
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 1643 began on December 29, 1642. 1643 has 53 ISO weeks, because 1 January 1643 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 16 of 1643 start and end?
Week 16 of 1643 starts on April 13, 1643 and ends on April 19, 1643 (ISO 8601, Monday to Sunday).
Which month is week 16 of 1643 in?
Week 16 of 1643 is in April.
What dates are in week 16 of 1643?
April 13, 1643, April 14, 1643, April 15, 1643, April 16, 1643, April 17, 1643, April 18, 1643, and April 19, 1643
How many weeks does 1643 have?
1643 has 53 ISO weeks, because 1 January 1643 falls on a Thursday.
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 1643. It runs from April 12, 1643 to April 18, 1643.