Week 3 in 670
Week 3 of 670 begins on January 17, 670 and ends on January 23, 670. It covers days 17 to 23 of the year and falls in quarter 1.
Weeks since this week: 70789
Week 3 of 670 at a glance
| Starts (Monday) | January 17, 670 |
|---|---|
| Ends (Sunday) | January 23, 670 |
| US week (Sunday to Saturday) | 4 (January 16, 670) |
| Month | January |
| Quarter | Q1 |
| Days of the year | 17–23 |
| Year completed at the end of this week | 6.3% |
| Weeks left in 670 after this week | 49 |
| Weeks in 670 | 52 |
| Even or odd week | Odd |
Calendar for January 670
Download Calendar in printable A4 PDF
(US version) (EU/ISO Version)
All Weeks in 670:
Past & Future Week Number 3:
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 4 of 670. It runs from January 16, 670 to January 22, 670.
Even and odd weeks
Week 3 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 3 in other years
| From | To | |
|---|---|---|
| Week 3 in 668 | January 13, 668 | January 19, 668 |
| Week 3 in 669 | January 18, 669 | January 24, 669 |
| Week 3 in 671 | January 16, 671 | January 22, 671 |
| Week 3 in 672 | January 15, 672 | January 21, 672 |
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 670 began on January 3, 670. 670 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 3 of 670 start and end?
Week 3 of 670 starts on January 17, 670 and ends on January 23, 670 (ISO 8601, Monday to Sunday).
Which month is week 3 of 670 in?
Week 3 of 670 is in January.
What dates are in week 3 of 670?
January 17, 670, January 18, 670, January 19, 670, January 20, 670, January 21, 670, January 22, 670, and January 23, 670
How many weeks does 670 have?
670 has 52 ISO weeks.
Is week 3 an even or odd week?
Week 3 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 4 of 670. It runs from January 16, 670 to January 22, 670.