Japan Business Day Calculator
Count business days between dates or find the date N business days later, excluding weekends and Japanese national holidays (Cabinet Office data). In-browser.
FAQ
Where does the holiday data come from?
The Cabinet Office national holiday CSV (incl. substitute holidays). Supported range: 1 Jan 1955 to 31 Dec 2027.
Are the start and end dates included?
Yes. Both are included in the business day count.
Is the base date counted in "N business days later"?
No. Counting starts the next day. For 0, it returns the base date if it is a business day, otherwise the next business day.
Can I add company holidays?
Only the option to close Dec 29 - Jan 3. Other custom holidays are not supported.