All tools · Date and time tools
Find the weekday of any date.
Free to use, no sign-up required. Day of the Week is one of 198 tools built into Xenition, alongside a chat that can use them for you.
Finds which weekday any date falls on and which day of the year it is. Handy for historic dates, future events and birthdays.
The weekday comes from your browser’s calendar for that date at local midnight. The day-of-year number counts calendar days from 1 January, which is day 1, so daylight saving changes cannot shift it.
4 July 2026 is a Saturday and day 185 of the year. 20 July 1969 was a Sunday, day 201. 31 December 2024 is day 366, because 2024 is a leap year.
Methods such as Zeller’s congruence or the Doomsday rule compute it from the day, month and year. The key fact is that each ordinary year shifts weekdays by one, and a leap year by two.
Yes. 1 January is day 1, and 31 December is day 365, or 366 in a leap year.
You do not have to open Day of the Week to use it. Ask Xenition in plain language and it runs the right tool, then carries the answer into whatever you are working on — a document, a spreadsheet, a deck.