Free Day of the Week Finder
Find which day of the week any date falls on.
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Inputs
Result
Day of week
Thursday
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Short answer
Find which day of the week any date falls on.
What is the Day of the Week Finder?
Find which day of the week any date falls on.
How does the Day of the Week Finder work?
Enter the inputs above and read the result.
Formula
Variables
dateCalendar date
Explanation
Uses the Gregorian calendar's day-of-week computation built into the Date object.
Examples
Applications
Advantages
Limitations
Common mistakes
Tips
Related concepts
The Day of the Week Finder sits inside the Date & Time Calculators hub, in the date arithmetic & calendars cluster. Adding to or classifying a date. Understanding the terms below makes the output easier to interpret and easier to compare against neighbouring measures.
Practical use cases and industry applications
Understanding Day of the Week Finder
Find which day of the week any date falls on. Within date & time calculators, day of the week finder belongs to the date arithmetic & calendars cluster, where it shares terminology and assumptions with closely related tools.
Learning how day of the week finder is calculated
Uses the Gregorian calendar's day-of-week computation built into the Date object. Working through the variables one at a time — date — makes the result reproducible by hand and easier to sanity-check.
Using day of the week finder to make a decision
Because outputs depend on the assumptions you enter, run more than one scenario before committing to a figure.
How day of the week finder compares with related measures
calendar rule, weekday, leap year, week number all describe adjacent aspects of date arithmetic & calendars. Comparing this calculator's output against those measures — using the related tools listed on this page — prevents a single metric from being read in isolation.
Frequently asked questions
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