About

Day of the week

Find the weekday, day of the year, and leap-year status for a date.

Input

Runs on your device

Result

Your result will appear here

How to use day of the week

Set Date. Select Run tool, then review the result. Use the download or copy controls to keep it. Reset restores the starting settings and clears the result.

Your files stay here

Inputs are processed in your browser and are not uploaded to an Everytool server. Results last until you reset or leave this page. Favorites and recently used tool names are saved only in this browser.