Week 3 in 4
Week 3 of 4 begins on January 12, 4 and ends on January 18, 4. It covers days 12 to 18 of the year and falls in quarter 1.
Weeks since this week: 105540
Week 3 of 4 at a glance
| Starts (Monday) | January 12, 4 |
|---|---|
| Ends (Sunday) | January 18, 4 |
| US week (Sunday to Saturday) | 3 (January 11, 4) |
| Month | January |
| Quarter | Q1 |
| Days of the year | 12–18 |
| Year completed at the end of this week | 4.9% |
| Weeks left in 4 after this week | 50 |
| Weeks in 4 | 53 |
| Even or odd week | Odd |
Calendar for January 4
Download Calendar in printable A4 PDF
(US version) (EU/ISO Version)
All Weeks in 4:
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 3 of 4. It runs from January 11, 4 to January 17, 4.
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 2 | January 14, 2 | January 20, 2 |
| Week 3 in 3 | January 13, 3 | January 19, 3 |
| Week 3 in 5 | January 17, 5 | January 23, 5 |
| Week 3 in 6 | January 16, 6 | January 22, 6 |
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 4 began on December 29, 3. 4 has 53 ISO weeks, because 1 January 4 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 3 of 4 start and end?
Week 3 of 4 starts on January 12, 4 and ends on January 18, 4 (ISO 8601, Monday to Sunday).
Which month is week 3 of 4 in?
Week 3 of 4 is in January.
What dates are in week 3 of 4?
January 12, 4, January 13, 4, January 14, 4, January 15, 4, January 16, 4, January 17, 4, and January 18, 4
How many weeks does 4 have?
4 has 53 ISO weeks, because 1 January 4 falls on a Thursday.
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 3 of 4. It runs from January 11, 4 to January 17, 4.