Day of the Week Calculator

About this calculator

Working out what day of the week a specific date fell or will fall on, like your grandparents' wedding date or a deadline three months out, isn't something most people can do reliably in their head, and paper calendars aren't always handy or don't cover the year you need. This calculator takes any date, past, present or future, and instantly returns the day of the week it falls on, along with whether it's a weekend, using standard Gregorian calendar rules rather than a lookup table limited to a specific year range. It's useful for confirming a historical event's weekday, checking whether a future appointment or deadline lands on a weekend, or settling a casual dispute about what day a particular date was.

Frequently asked questions