Day of the Week Calculator
The Day of the Week Calculator is a simple and free online tool that helps you find the day of the week for any date. Select the day, month, and year, and the calculator instantly tells you whether the date falls on Monday, Tuesday, Wednesday, Thursday, Friday, Saturday, or Sunday.
It also provides additional information such as the day number within the year, total days in the year, days remaining, and the occurrence of that particular weekday.
How to Use the Day of the Week Calculator
Using the calculator is easy:
- Select the Day.
- Select the Month.
- Select the Year.
- The calculator will automatically display the result.
For example, if you select September 17, 2026, the calculator shows:
September 17, 2026 is a Thursday.
It also provides detailed information about the selected date.
What Information Does the Calculator Show?
The calculator provides the following information:
Day of the Week
It tells you which day of the week the selected date falls on.
For example:
September 17, 2026 is a Thursday.
Day of the Year
The calculator determines the position of the selected date within the year.
For September 17, 2026:
It is the #260 day out of a total of 365 days in 2026.
Days Remaining in the Year
It also calculates how many days remain after the selected date.
For September 17, 2026:
There are 105 days left in 2026.
Weekday Occurrence
The calculator determines which occurrence of the weekday the selected date represents in that year.
For September 17, 2026:
It is the #38 Thursday of 2026.
Total Occurrences of the Weekday
It also calculates the total number of times that weekday occurs during the selected year.
For 2026:
There are 53 Thursdays in 2026.
Remaining Occurrences
Finally, it calculates how many occurrences of that weekday are left after the selected date.
For September 17, 2026:
There are 15 Thursdays left in 2026.
Example
Suppose you select:
- Day: 17
- Month: September
- Year: 2026
The calculator gives:
September 17, 2026 is a Thursday.
Additional information:
- Day of the year: #260 of 365
- Days remaining: 105 days
- Thursday occurrence: #38
- Total Thursdays: 53
- Thursdays remaining: 15
Why Use a Day of the Week Calculator?
Finding the weekday manually can require date calculations or calendar references. This calculator provides the answer instantly and can be useful for:
- Checking the weekday of a past date
- Finding the weekday of a future date
- Planning events and appointments
- Checking birthdays and anniversaries
- Calculating the position of a date within a year
- Finding how many times a particular weekday occurs in a year
- Calendar and date-related calculations
Leap Year Support
The calculator automatically handles leap years.
A normal year contains 365 days, while a leap year contains 366 days. When you select a date from a leap year, the calculator automatically updates the total number of days and the remaining days accordingly.
It also correctly handles February 29 when the selected year is a leap year.
Frequently Asked Questions
What day of the week is my date?
Select the day, month, and year in the calculator. The weekday will be displayed instantly.
How many days are in a year?
A normal year has 365 days. A leap year has 366 days.
What is the day number of a date?
The day number represents the position of a date within the year. For example, January 1 is day #1, while December 31 is day #365 in a normal year.
How can I find the nth Thursday, Friday, or other weekday?
Select your date in the calculator. It will show the occurrence number of that date’s weekday within the selected year.
Does the calculator support leap years?
Yes. The calculator automatically identifies leap years and calculates dates based on 365 or 366 days as appropriate.
Conclusion
The Day of the Week Calculator provides a quick way to determine the weekday for any date. Simply select the day, month, and year to get the weekday along with useful calendar information such as the day of the year, days remaining, weekday occurrence, and total occurrences of that weekday.
Whether you’re checking a historical date, planning a future event, or simply curious about a particular date, this calculator makes date calculations quick and easy.