Business Days Date Calculator

Find the date that falls a given number of business days before or after a start date, automatically skipping weekends and Japanese public holidays.

Input

Start date

YYYY/MM/DD

Number of business days

business days

Enter a start date and the number of business days.

Enter a start date, a number of business days, and choose 'business days later' or 'business days earlier' to get the matching date with its weekday. The start date itself is not counted; each business day moved forward (or back) adds one to the count.
Saturdays, Sundays, and Japanese public holidays are skipped automatically as non-working days. Holidays are based on the Japanese holiday calendar and include substitute holidays and citizens' holidays.
Along with the result, you can see the calendar days that elapse between the start date and the target date, plus the number of days off (weekends and holidays) skipped along the way.
Use it for estimating deadlines, checking payment due dates, counting business days until a document is due, and other date calculations in business.
Company-specific closures (year-end and New Year, summer breaks, founding anniversaries, etc.) are not reflected. If you have any, treat the result as a guide.
Enter the number of business days as a whole number of 0 or more. Entering 0 simply returns the start date.

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