# Thailand Working Day

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

- Calculator id: `thailand-financial-working-day` · Category: Everyday Life (`everyday`) · Tool name: `check_th_working_day`
- Canonical page: https://tttkmbb.com/everyday/thailand-financial-working-day · This document: https://tttkmbb.com/everyday/thailand-financial-working-day.md · JSON definition: https://tttkmbb.com/everyday/thailand-financial-working-day.json

## Purpose

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

**Use when:** 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.


## Input

| Parameter | Type | Unit | Required | Description |
| --- | --- | --- | --- | --- |
| `date` | date |  | required | Gregorian date in the pinned Bank of Thailand 2026-2027 financial-institution coverage. |

## Output

| Field | Type | Unit | 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. |

## 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.

## Data Sources

- Bank of Thailand financial-institution holidays — https://www.bot.or.th/en/financial-institutions-holiday.html (central_bank_official_calendar)
- BOT notification index — https://app.bot.or.th/FIPCS/Eng/PFIPCS_List.aspx?DocGroup=1 (central_bank_official_notice_index)

Data freshness: `static`. Refresh after the Thailand authority publishes a new schedule.

## API

- `GET https://tttkmbb.com/api/v1/calculate/thailand-financial-working-day?date=…`
- `POST https://tttkmbb.com/api/v1/calculate/thailand-financial-working-day` with JSON body `{"inputs": {…}}`
- Response: unified envelope (`success`, `request`, `result.values`, `result.units`, `sources`, `freshness`, `timestamp`, `next_actions`, `links`); see https://tttkmbb.com/docs/response-format.md
- Schema: https://tttkmbb.com/api/v1/calculators/thailand-financial-working-day · OpenAPI operationId `check_th_working_day` in https://tttkmbb.com/openapi.json
- Authentication: none. Rate limit: fair use, see https://tttkmbb.com/docs/rate-limits.md.

## MCP

- Server: `https://tttkmbb.com/mcp` (Streamable HTTP, JSON-RPC 2.0, no auth)
- Tool:  `run_calculator` with `{"calculator_id": "thailand-financial-working-day", "inputs": {…}}`

## Example

- 2027 substitution: inputs `{"date":"2027-02-22"}` → `{"is_working_day":false}`
- Bangkok-only event remains conditional: inputs `{"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
```

## Limitations

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. Apply the pinned authority event table over the declared weekday baseline; do not infer uncovered employer or regional schedules. All values are computed from the formula above; no measurement or live data is involved.

## 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

- [Add Thailand Working Days](https://tttkmbb.com/everyday/thailand-financial-add-working-days.md) — Offset through the same authority package.