Week 42 in 51
Week 42 of 51 begins on October 16, 51 and ends on October 22, 51. It covers days 289 to 295 of the year and falls in quarter 4.
Weeks since this week: 103048
Week 42 of 51 at a glance
| Starts (Monday) | October 16, 51 |
|---|---|
| Ends (Sunday) | October 22, 51 |
| US week (Sunday to Saturday) | 42 (October 15, 51) |
| Month | October |
| Quarter | Q4 |
| Days of the year | 289–295 |
| Year completed at the end of this week | 80.8% |
| Weeks left in 51 after this week | 10 |
| Weeks in 51 | 52 |
| Even or odd week | Even |
Calendar for October 51
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(US version) (EU/ISO Version)
All Weeks in 51:
Past & Future Week Number 42:
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 42 of 51. It runs from October 15, 51 to October 21, 51.
Even and odd weeks
Week 42 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 42 in other years
| From | To | |
|---|---|---|
| Week 42 in 49 | October 18, 49 | October 24, 49 |
| Week 42 in 50 | October 17, 50 | October 23, 50 |
| Week 42 in 52 | October 14, 52 | October 20, 52 |
| Week 42 in 53 | October 13, 53 | October 19, 53 |
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 51 began on January 2, 51. 51 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 42 of 51 start and end?
Week 42 of 51 starts on October 16, 51 and ends on October 22, 51 (ISO 8601, Monday to Sunday).
Which month is week 42 of 51 in?
Week 42 of 51 is in October.
What dates are in week 42 of 51?
October 16, 51, October 17, 51, October 18, 51, October 19, 51, October 20, 51, October 21, 51, and October 22, 51
How many weeks does 51 have?
51 has 52 ISO weeks.
Is week 42 an even or odd week?
Week 42 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 42 of 51. It runs from October 15, 51 to October 21, 51.