# Count Thailand Working Days

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

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

## Purpose

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

**Use when:** 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.


## Input

| Parameter | Type | Unit | Required | Description |
| --- | --- | --- | --- | --- |
| `start_date` | date |  | required | First date in 2026-2027. |
| `end_date` | date |  | required | Last date in 2026-2027. |
| `include_start_date` | boolean |  | optional, default true | Whether start_date participates. |
| `include_end_date` | boolean |  | optional, default true | Whether end_date participates. |

## Output

| Field | Type | Unit | 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. |

## Formula

`for each included date: working_days += status.is_working_day`

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

## 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`. Pinned th-bot-financial-holidays-2026-2027.1 package.

## API

- `GET https://tttkmbb.com/api/v1/calculate/thailand-financial-working-days-between?start_date=…&end_date=…`
- `POST https://tttkmbb.com/api/v1/calculate/thailand-financial-working-days-between` 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-days-between · OpenAPI operationId `count_th_working_days` 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-days-between", "inputs": {…}}`

## Example

- 2027 Songkran interval: inputs `{"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
```

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

- [Thailand Working Day](https://tttkmbb.com/everyday/thailand-financial-working-day.md) — Inspect a date and source evidence.