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Thailand Working Day

Checks a date against the Saturday-Sunday weekend baseline and exact 2026-2027 authority events.

When to use

You need a deterministic Thailand Thailand financial institutions and specialized financial institutions result.

Do not use when: This is a Bank of Thailand financial-institution calendar, not a universal Thai employee, government, employer, exchange or payment-settlement calendar. Bangkok-only, Islamic-bank and southern-branch conditions remain explicit and are not generalized.

Example user requests

Thailand: 2027 substitution.
Thailand: Bangkok-only event remains conditional.

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 the pinned Bank of Thailand 2026-2027 financial-institution coverage.

Outputs

Output	Type	Description
`territory`	string	TH (Thailand).
`territory_name`	string	Thailand
`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	Thailand financial institutions and specialized financial institutions
`holiday_policy`	string	BOT_published_financial_institution_and_specialized_financial_institution_holidays
`substitute_day_policy`	string	BOT_substitution_events_are_pinned; no new substitution is inferred
`calendar_profile`	string	thailand-bot-financial-holidays
`dataset_version`	string	th-bot-financial-holidays-2026-2027.1
`sources`	list	Authority and legislation sources.

Example

2027 substitution: {"date":"2027-02-22"} → {"is_working_day":false}

Bangkok-only event remains conditional: {"date":"2026-10-16"} → {"is_working_day":true,"holiday_kinds":["conditional_bangkok_special_holiday"]}

GET https://tttkmbb.com/api/v1/calculate/thailand-financial-working-day?date=2027-02-22

Machine access

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

Sources

Bank of Thailand financial-institution holidays (central_bank_official_calendar)
BOT notification index (central_bank_official_notice_index)

FAQ

Does this cover every Thai worker?

No. It is limited to financial institutions and specialised financial institutions under BOT's published calendar.

Are Islamic-bank and southern-branch Eid dates included?

No fixed date is guessed. BOT says those extra holidays depend on the Sheikhul Islam Office and branch conditions.

Is the Bangkok 2026 special holiday nationwide?

No. It remains a conditional event and is not counted as a nationwide closure by the default calculator.

Related calculators

Add Thailand Working Days — Offset through the same authority package.