Day of Week Calculator
Find what day of the week any date falls on.
Wednesday
3 June 2026
Wednesday
Day of Week
4 / 7
Day Number (Sun=1)
154
Day of Year
211
Days Left in Year
Week 22
Approx. Week Number
Weekday
Type
No (365 days)
Leap Year
6 / 12
Month Number
About This Tool
The Day of Week Calculator tells you what day of the week any date falls on, along with additional calendar facts: day number within the year, days remaining in the year, week number, whether it is a weekday or weekend, and whether the year is a leap year.
All calculations happen instantly in your browser using JavaScript's native Date API. No data is sent to any server.
How to Use
- Select any date using the date picker.
- All calendar facts update instantly — no button required.
Use Cases
Historians verify what day of the week a historical event occurred. HR managers check whether a specific date is a weekday for payroll. Content creators plan publication dates around weekdays for better engagement.
FAQ
- What calendar system is used? — The Gregorian calendar, which is the internationally accepted civil calendar.
- Are historical dates (before 1970) supported? — Yes. JavaScript's Date object handles dates back to around 100 million days before the Unix epoch.