Week 5 in 1643
Week 5 of 1643 begins on January 26, 1643 and ends on February 1, 1643. It covers days 26 to 32 of the year and falls in quarter 1.
Weeks since this week: 20018
Week 5 of 1643 at a glance
| Starts (Monday) | January 26, 1643 |
|---|---|
| Ends (Sunday) | February 1, 1643 |
| US week (Sunday to Saturday) | 5 (January 25, 1643) |
| Month | January / February |
| Quarter | Q1 |
| Days of the year | 26–32 |
| Year completed at the end of this week | 8.8% |
| Weeks left in 1643 after this week | 48 |
| Weeks in 1643 | 53 |
| Even or odd week | Odd |
Calendar for January 1643
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(US version) (EU/ISO Version)
All Weeks in 1643:
Past & Future Week Number 5:
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 5 of 1643. It runs from January 25, 1643 to January 31, 1643.
Even and odd weeks
Week 5 is an odd week. Even and odd week numbers are used for alternating schedules such as shift rotas, school timetables, custody arrangements and waste collection.
Week 5 in other years
| From | To | |
|---|---|---|
| Week 5 in 1641 | January 28, 1641 | February 3, 1641 |
| Week 5 in 1642 | January 27, 1642 | February 2, 1642 |
| Week 5 in 1644 | February 1, 1644 | February 7, 1644 |
| Week 5 in 1645 | January 30, 1645 | February 5, 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 5 of 1643 start and end?
Week 5 of 1643 starts on January 26, 1643 and ends on February 1, 1643 (ISO 8601, Monday to Sunday).
Which month is week 5 of 1643 in?
Week 5 of 1643 starts in January and ends in February.
What dates are in week 5 of 1643?
January 26, 1643, January 27, 1643, January 28, 1643, January 29, 1643, January 30, 1643, January 31, 1643, and February 1, 1643
How many weeks does 1643 have?
1643 has 53 ISO weeks, because 1 January 1643 falls on a Thursday.
Is week 5 an even or odd week?
Week 5 is an odd 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 5 of 1643. It runs from January 25, 1643 to January 31, 1643.