Day of the Year Checker
Which numbered day of the year any date is, plus the week number and leap-year status.
1 January is day 1 and 31 December is day 365, or day 366 in a leap year, and every date after 28 February shifts by one day number in a leap year.
Day of the Year Checker
Frequently asked
Is the Day of the Year Checker free?
Yes. Every tool on AlphaBetaMinds is free, needs no account and has no usage limit.
Does this tool store what I type?
No. It runs entirely in your browser. Your inputs are never sent to our server, and nothing is logged.
How accurate is it?
It uses the McCrindle generation boundaries (Gen Alpha 2010–2024, Gen Beta 2025–2039) and UN World Population Prospects vital rates. Sources and formulas are on our methodology page.
Can I use the result in an article or report?
Yes, with a credit and a link back to this page. See our terms of use for the full licence.
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