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Count Thailand Working Days

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

When to use

You need an auditable Thailand working-day count.

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

Count Thailand working days around 2027 substitution.
Count Thailand working days around Bangkok-only event remains conditional.

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 2026-2027.
`end_date`	date	yes	Last date in 2026-2027.
`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	TH (Thailand).
`territory_name`	string	Thailand
`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 Songkran interval: {"start_date":"2027-04-13","end_date":"2027-04-15","include_start_date":true,"include_end_date":true} → {"working_days":0,"non_working_days":3}

GET https://tttkmbb.com/api/v1/calculate/thailand-financial-working-days-between?start_date=2027-04-13&end_date=2027-04-15&include_start_date=true&include_end_date=true

Machine access

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

Thailand Working Day — Inspect a date and source evidence.