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South Korea Working Day

Checks a date against the Saturday-Sunday weekend baseline and exact 2026-2026 authority events.

When to use

You need a deterministic South Korea South Korea statutory public holidays and public-office substitute holidays for 2026 result.

Do not use when: The package covers the 2026 statutory/public-office schedule only; private-employer, school, bank, exchange, local-government and 2027 schedules are not inferred.

Example user requests

South Korea: New Labor Day public holiday.
South Korea: Published substitute holiday.

Formula

is_working_day = not an official Saturday/Sunday weekend date and no exact authority event

Apply the pinned authority event table over the declared weekday baseline; do not infer uncovered employer or regional schedules.

Inputs

Parameter	Type	Unit	Required	Description
`date`	date		yes	Gregorian date in South Korea coverage.

Outputs

Output	Type	Description
`territory`	string	KR (South Korea).
`territory_name`	string	South Korea
`weekday`	string	Gregorian weekday.
`is_working_day`	boolean	Monday-Friday with no event in this pinned authority scope.
`day_type`	string	Deterministic classification: official_weekend, regular_workday, or the first published authority event kind.
`holiday_names`	string_list	Events applying on the date.
`holiday_kinds`	string_list	Authority event classifications.
`holiday_details`	list	Structured event details, including partial-day notes where published.
`calendar_scope`	string	South Korea statutory public holidays and public-office substitute holidays for 2026
`holiday_policy`	string	National, substitute and election holiday event kinds are preserved; this is not a universal private-employer or school closure calendar.
`substitute_day_policy`	string	Only the published 2026 substitute dates are included; employer exchanges, local-government holidays and school schedules are not inferred.
`calendar_profile`	string	south-korea-public-holidays
`dataset_version`	string	kr-public-holidays-2026.1
`sources`	list	Authority and legislation sources.

Example

New Labor Day public holiday: {"date":"2026-05-01"} → {"is_working_day":false,"day_type":"national_holiday"}

Published substitute holiday: {"date":"2026-10-05"} → {"is_working_day":false,"day_type":"substitute_holiday"}

GET https://tttkmbb.com/api/v1/calculate/south-korea-public-working-day?date=2026-05-01

Machine access

API: GET https://tttkmbb.com/api/v1/calculate/south-korea-public-working-day (query parameters) or POST with a JSON body {"inputs": {...}}
Schema: https://tttkmbb.com/api/v1/calculators/south-korea-public-working-day · Markdown: https://tttkmbb.com/everyday/south-korea-public-working-day.md · JSON definition: https://tttkmbb.com/everyday/south-korea-public-working-day.json
MCP: server https://tttkmbb.com/mcp, tool run_calculator with calculator_id="south-korea-public-working-day"
OpenAPI operationId: check_kr_working_day
Freshness: static. Authentication: none. Rate limit: fair use (see rate limits).

Sources

Korea National Law Information Center – public holidays regulation (government_law)
Ministry of Personnel Management – Labor Day and Constitution Day public holidays (government_press_release)
Ministry of Employment and Labor – Labor Day public-holiday implementation (government_press_release)
Korea Astronomy and Space Science Institute – 2026 calendar data (government_calendar_reference)

FAQ

Does this represent every Korean employer's closure calendar?

No. It is a statutory/public-office evidence package for 2026; employer, school, bank, exchange and local schedules are not inferred.

Related calculators

Add South Korea Working Days — Offset through the same authority package.