Week 3 of 2027: Dates
Week 3 of 2027 starts on Monday, January 18, 2027 and ends on Sunday, January 24, 2027. It falls in January, in the first quarter of 2027.
The days of week 3, 2027
| Day | Date | Day of year | US federal holiday |
|---|---|---|---|
| Monday | January 18, 2027 | Day 18 | Martin Luther King Jr. Day |
| Tuesday | January 19, 2027 | Day 19 | |
| Wednesday | January 20, 2027 | Day 20 | |
| Thursday | January 21, 2027 | Day 21 | |
| Friday | January 22, 2027 | Day 22 | |
| Saturday | January 23, 2027 | Day 23 | |
| Sunday | January 24, 2027 | Day 24 |
Other days in this week: Martin Luther King Jr. Day, Tu BiShvat, Shab-e-Barat.
ISO and US week numbers
Week 3 covers days 18 to 24 of 2027. US calendars start the week a day earlier, on Sunday, January 17. On that count the same Monday is in week 4 of 2027, one off from the ISO number. To check it in Excel or Google Sheets, =ISOWEEKNUM(DATE(2027,1,18)) returns 3 and =WEEKNUM(DATE(2027,1,18)) returns 4.
Week 3 by year
| Year | Monday | Sunday |
|---|---|---|
| 2027 | January 18, 2027 | January 24, 2027 |
| 2028 | January 17, 2028 | January 23, 2028 |
| 2029 | January 15, 2029 | January 21, 2029 |
| 2030 | January 14, 2030 | January 20, 2030 |
| 2031 | January 13, 2031 | January 19, 2031 |
| 2032 | January 12, 2032 | January 18, 2032 |
This page shows the next week 3 that has not ended yet. ISO weeks start on Monday, and week 1 contains the year's first Thursday.
Week 3 questions
When does week 3 of 2027 start?
On Monday, January 18, 2027. It ends on Sunday, January 24, 2027, seven days later.
Does every year have a week 3?
Yes. Every ISO year has weeks 1 to 52, and only some have a week 53.
Related pages
Cite this page
APA: ClockTotals. (2026, October 17). Week 3 of 2027: Dates. https://clocktotals.com/week-number/3/
MLA: “Week 3 of 2027: Dates.” ClockTotals, 17 Oct. 2026, clocktotals.com/week-number/3/.
Link (HTML): <a href="https://clocktotals.com/week-number/3/">Week 3 of 2027: Dates</a>