Week 43 in 2027
Week 43 of 2027 begins on October 25, 2027 and ends on October 31, 2027. It covers days 298 to 304 of the year and falls in quarter 4.
Weeks until this week: 54
Week 43 of 2027 at a glance
| Starts (Monday) | October 25, 2027 |
|---|---|
| Ends (Sunday) | October 31, 2027 |
| US week (Sunday to Saturday) | 44 (October 24, 2027) |
| Month | October |
| Quarter | Q4 |
| Days of the year | 298–304 |
| Year completed at the end of this week | 83.3% |
| Weeks left in 2027 after this week | 9 |
| Weeks in 2027 | 52 |
| Even or odd week | Odd |
Calendar for October 2027
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(US version) (EU/ISO Version)
All Weeks in 2027:
Past & Future Week Number 43:
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 44 of 2027. It runs from October 24, 2027 to October 30, 2027.
Even and odd weeks
Week 43 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 43 in other years
| From | To | |
|---|---|---|
| Week 43 in 2025 | October 20, 2025 | October 26, 2025 |
| Week 43 in 2026 | October 19, 2026 | October 25, 2026 |
| Week 43 in 2028 | October 23, 2028 | October 29, 2028 |
| Week 43 in 2029 | October 22, 2029 | October 28, 2029 |
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 2027 began on January 4, 2027. 2027 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 43 of 2027 start and end?
Week 43 of 2027 starts on October 25, 2027 and ends on October 31, 2027 (ISO 8601, Monday to Sunday).
Which month is week 43 of 2027 in?
Week 43 of 2027 is in October.
What dates are in week 43 of 2027?
October 25, 2027, October 26, 2027, October 27, 2027, October 28, 2027, October 29, 2027, October 30, 2027, and October 31, 2027
How many weeks does 2027 have?
2027 has 52 ISO weeks.
Is week 43 an even or odd week?
Week 43 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 44 of 2027. It runs from October 24, 2027 to October 30, 2027.