Estimate a deadline using Korean Civil Act counting rules and Korean public-holiday extensions.
Use this when you know the base date and the length of the period, such as '30 days from notice' or '3 months from signing'.
You can combine years, months, weeks, and days in one entry. Example: 1 year 6 months 2 weeks.
Enter the dates and period
to see the result
All results are reference information based on general principles of the Korean Civil Act. Actual legal effect and deadline outcomes can vary depending on the facts, special agreements, and other applicable statutes. Consult a qualified professional before relying on the result for an important legal action.
For a typical one-year period, the calculator starts from the next day when day one is excluded, applies Korean Civil Act calendar counting, and then checks whether the final day should move because it falls on a Saturday or Korean public holiday.
The calculator follows the Korean Civil Act approach of using the last day of the target month when no matching calendar day exists.
It is the general statutory baseline under Korean Civil Act rules, but specific agreements or special statutes can change the outcome. That is why the calculator lets you turn the extension on or off for reference.
When enabled, the calculator checks Korean public holiday data so it can determine whether the last day should move to the next business day.
You can combine years, months, weeks, and days in one calculation. The calculator processes them in the legal counting order of years, then months, then days.