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Count South Korea Working Days

Counts authority-scope working and non-working dates in a range.

When to use

You need an auditable South Korea working-day count.

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

Count South Korea working days around New Labor Day public holiday.
Count South Korea working days around Published substitute holiday.

Formula

for each included date: working_days += status.is_working_day

Normalize endpoints and count exact authority events over the declared weekday baseline.

Inputs

Parameter	Type	Required	Description
`start_date`	date	yes	First date in 2026-2026.
`end_date`	date	yes	Last date in 2026-2026.
`include_start_date`	boolean	default true	Whether start_date participates.
`include_end_date`	boolean	default true	Whether end_date participates.

Outputs

Output	Type	Description
`working_days`	integer	Authority-scope working dates.
`non_working_days`	integer	Weekend and exact authority events.
`public_holidays_counted`	list	Exact events in the range.
`territory`	string	KR (South Korea).
`territory_name`	string	South Korea
`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

Coverage starts with a published event: {"start_date":"2026-01-01","end_date":"2026-01-01","include_start_date":true,"include_end_date":true} → {"working_days":0,"non_working_days":1}

GET https://tttkmbb.com/api/v1/calculate/south-korea-public-working-days-between?start_date=2026-01-01&end_date=2026-01-01&include_start_date=true&include_end_date=true

Machine access

API: GET https://tttkmbb.com/api/v1/calculate/south-korea-public-working-days-between (query parameters) or POST with a JSON body {"inputs": {...}}
Schema: https://tttkmbb.com/api/v1/calculators/south-korea-public-working-days-between · Markdown: https://tttkmbb.com/everyday/south-korea-public-working-days-between.md · JSON definition: https://tttkmbb.com/everyday/south-korea-public-working-days-between.json
MCP: server https://tttkmbb.com/mcp, tool run_calculator with calculator_id="south-korea-public-working-days-between"
OpenAPI operationId: count_kr_working_days
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

South Korea Working Day — Inspect a date and source evidence.