Weekday Counter

Count how many weekdays (Mon–Fri) fall between two dates, plus the number of business days once Japanese public holidays are removed.

Input

Target month

YYYY年MM月

Also count business days excluding Japanese public holidays

Please select a target month.

Both the start and end dates are included, and every day in the range is counted as a weekday (Mon–Fri), Saturday, or Sunday.
Tick "Also count business days excluding Japanese public holidays" to subtract any weekdays that land on a public holiday (including substitute holidays) and show the resulting business-day count.
Holiday data is fetched per year for the range from the free Nager.Date API (date.nager.at). Depending on your connection or the API's status, the request may occasionally fail.
Holidays that fall on a weekend do not affect the business-day count, since those days are not weekdays to begin with.
Company-specific closures such as founding-anniversary days or year-end breaks are not included—only statutory public holidays are.

Tell us what you think of this calculator.