time-date Verified Precision Tool
Day of Week Calculator
Find the exact day of the week (Monday through Sunday) for any historical or future date.
Date Calculation Result
Thursday
1995-06-15 falls on a Thursday
Mathematical Formula
Day of Week = Zeller Congruence or Gregorian calendar day index
Overview & Explanation
Determines which day of the week any given calendar date falls on.
How It Works
- Uses standard Gregorian calendar algorithms to map date to weekday.
Practical Applications
- Discovering the day of the week you were born.
- Planning future event schedules.
Worked Example: Sept 1, 2026
Find weekday.
1
Evaluate Calendar Index
Gregorian day calculation
= Tuesday
Frequently Asked Questions
What day of the week was September 1, 2026?
September 1, 2026 is a Tuesday.
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