Day of Week Finder
Find which day of the week any date falls on (past, present or future).
Quick answer: Day of Week Finder: find which day of the week any date falls on (past, present or future). Runs entirely in your browser, free, no signup.
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Under the hood this reads the weekday straight from your browser's date engine, which follows the proleptic Gregorian calendar — the modern calendar projected backward in time. That's worth knowing for genuinely historical dates: before the various national adoptions of the Gregorian reform (1582 in Catholic Europe, 1752 in Britain and its colonies, later elsewhere), the weekday a contemporary would have written down can differ from what a straight Gregorian calculation returns.
For everyday and future dates the answer is exact, leap years included — February 29 is handled automatically because the calendar rules are baked into the date math. This makes the tool handy for planning: checking whether a deadline lands on a weekend, confirming which weekday a recurring event will fall on next year, or settling the classic "what day was I born?" question.
The tool answers "what day is this one date?" rather than "find every date that's a Tuesday." If you need to step forward or backward by a fixed interval — say, every second Friday — pair it with the date-arithmetic tools, and for calendar-week context reach for the ISO Week Number Calculator.
Frequently asked questions
- Is the day-of-week finder free?
- Yes — free with no signup.
- How far back can I check?
- Any year your browser's Date object accepts — well past 0 AD.
- Are my dates uploaded?
- No — every check runs in your browser.
- What's special about leap years?
- Feb 29 only exists on leap years; the tool handles this automatically.
- Can I see all dates that fall on a Friday?
- Not in this tool — for that, use the Date Add/Subtract tool to step through dates one week at a time.