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Date Calculator
D-day, duration, business days
Target date
How to use
Work out how many days are left until a date (D-day), how many years, months and days lie between two dates, and how many business days there are once weekends and holidays are excluded.
Q. Are holidays taken into account for business days?
A. On the English site, business days exclude only weekends (Saturday and Sunday); public holidays are not counted. The Korean site additionally excludes South Korean public holidays for 2026, and the Japanese site excludes Japanese public holidays for 2026.
Q. Can I get the date that is a set number of days after a given date?
A. Yes. Add or subtract days, weeks, months or years from a base date and the resulting date is shown right away.