한국어

Korean Business Day Calculator

Count working days in Korea with weekends and public holidays taken out.

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What a Korean business day leaves out

A calculator that only removes weekends will overshoot on Korean dates. In a normal year Korea has around 15 weekday holidays, and they land in clusters.
Kind of dayCounted as a business day?
Monday to FridayYes
Saturday and SundayNo, counted as weekend
Statutory public holidayNo, counted as a holiday
Substitute holidayNo. Korea moves a holiday that lands on a weekend to the next working day
A holiday that falls on a weekendCounted once, under holidays, so the two totals never double up

Where the count actually matters

Around Seollal and Chuseok the country closes for three days or more at a stretch, so a five business day promise can take over a week.
SituationWhy business days, not calendar days
Immigration and visa paperworkProcessing times are quoted in working days, and the office is shut on holidays
Bank transfers and settlementBanks close on public holidays, so money moves on the next working day
Parcels and customsNothing clears during a long holiday break, which can add three or four days
Contract and notice periodsKorean contracts often say 'within N business days of receipt'

Does the first day count?

Korean law counts from the day after, under Article 157 of the Civil Act. That is one day apart from the habit most English contracts follow, and it is the single most common source of a mismatched deadline.
SettingDay one isUse it for
Skip the start dateThe next working day after the date you enterDeadlines written as 'within N business days of receipt'
Count the start dateThe date you enter, if it is a working dayMatching the business day total for a period you already have

The holidays that move every year

This calculator reads the official holiday list rather than a formula, so lunar holidays, substitute days and one-off holidays are all already in it.
HolidayFixed onWhat that means
Seollal (설날)Lunar new year, plus the day either sideFalls anywhere from late January to late February
Chuseok (추석)15th day of the 8th lunar month, plus the day either sideFalls anywhere from early September to early October
Buddha's Birthday8th day of the 4th lunar monthUsually in May, sometimes late April
The government can also declare a one-off holiday at short notice, often to stretch a break. Our list is checked daily, so a new one shows up the next day.

FAQ ❓

Monday to Friday, minus public holidays. Saturday has not been a working day for most Korean offices since the five-day week came in, and banks, government offices and courts all close on statutory holidays. Substitute holidays count as holidays too.
Because Korea has around fifteen weekday holidays in a normal year, and they arrive in clusters rather than one at a time. Seollal and Chuseok are three days each, and either can be extended by a substitute day. Over a month-long period the two methods can differ by a week.
It depends on which setting you pick, and the two are one day apart. Korean law counts from the day after, under Article 157 of the Civil Act, so a deadline written as 'within 7 business days of receipt' starts the day after receipt. Switch to 'count the start date' if you want the total for a period you already have.
Immigration offices close on public holidays, so nothing is processed on those days. If your appointment or filing window runs through Seollal or Chuseok, add the whole break rather than a single day.
No. Banks settle on the next working day, and customs clearance stops for the length of the break. A delivery quoted at three business days can take over a week if it starts just before a long holiday.
You can enter any date between 1900 and 2100, but the holiday list itself covers a fixed range of years. Outside that range only weekends are removed, and the result says so rather than pretending the answer is complete.

Sources 🌐