What dates are in week 1 of 2027?

Week 1 runs from January 4, 2027 through January 10, 2027.

How many weekdays are in week 1?

There are five Monday-to-Friday weekdays before country-specific public holidays are excluded.

Exact ISO week dates

Week 1 of 2027

Week 1 of 2027 runs from Monday, January 4, to Sunday, January 10. See every date, weekday count and adjacent ISO weeks.

ISO week 1January 4–January 10, 2027Monday through Sunday · 5 weekdays · 2 weekend days

Upcoming

Dates in week 1

Day	Date	Type
Monday	January 4, 2027	Weekday
Tuesday	January 5, 2027	Weekday
Wednesday	January 6, 2027	Weekday
Thursday	January 7, 2027	Weekday
Friday	January 8, 2027	Weekday
Saturday	January 9, 2027	Weekend
Sunday	January 10, 2027	Weekend

About week 1 of 2027

Week 1 of 2027 runs from Monday, January 4 through Sunday, January 10. It spans January and contains five standard Monday-to-Friday weekdays.

Public holidays are country-specific and are not removed from this basic weekday count. Use the working-days calculator when holidays need to be excluded.