# Add Colombia Working Days

> Adds or subtracts Colombia authority-scope working days in exact coverage.

- Calculator id: `colombia-public-add-working-days` · Category: Everyday Life (`everyday`) · Tool name: `add_co_working_days`
- Canonical page: https://tttkmbb.com/everyday/colombia-public-add-working-days · This document: https://tttkmbb.com/everyday/colombia-public-add-working-days.md · JSON definition: https://tttkmbb.com/everyday/colombia-public-add-working-days.json

## Purpose

Adds or subtracts Colombia authority-scope working days in exact coverage.

**Use when:** You need a deterministic Colombia working-day offset.

**Do not use when:** This package covers Colombia's nationwide statutory paid-rest holiday layer over a Saturday-Sunday baseline. Municipal, departmental, school, bank, employer, sector and local patron-saint schedules are not inferred. Future annual calendars require refreshed official evidence.

## Example user requests

- Add or subtract Colombia working days around Colombia transferred Three Kings holiday.
- Add or subtract Colombia working days around Colombia Good Friday.
- Add or subtract Colombia working days around Ordinary Colombia working day.


## Input

| Parameter | Type | Unit | Required | Description |
| --- | --- | --- | --- | --- |
| `start_date` | date |  | required | Gregorian start date in 2026-2026. |
| `working_days` | integer |  | required | Signed offset; start date excluded for non-zero offsets. (min -1000, max 1000) |

## Output

| Field | Type | Unit | Description |
| --- | --- | --- | --- |
| `start_date` | date |  | Input date. |
| `result_date` | date |  | Date reached. |
| `working_days_added` | integer |  | Signed requested offset. |
| `calendar_days_elapsed` | integer |  | Signed Gregorian difference. |
| `public_holidays_skipped` | list |  | Exact events crossed. |
| `territory` | string |  | CO (Colombia). |
| `territory_name` | string |  | Colombia |
| `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 |  | Colombia nationwide statutory paid-rest public holidays for 2026 |
| `holiday_policy` | string |  | Colombia_Ley_51_1983_plus_Ministry_of_Finance_2026_calendar |
| `substitute_day_policy` | string |  | Published_2026_Ley_51_Monday_transfers_are_included; future_or_local_transfers_are_not_inferred |
| `calendar_profile` | string |  | colombia-public-holidays |
| `dataset_version` | string |  | co-government-public-2026.1 |
| `sources` | list |  | Authority and legislation sources. |

## Formula

`move one day at a time; decrement only on status.is_working_day=true`

Skip Saturday/Sunday and exact pinned authority events; do not add unverified substitute days.

## Data Sources

- Colombia Ministry of Finance – 2026 holiday calendar — https://sedeelectronica.minhacienda.gov.co/SedeElectronica/info/inicio.do?formAction=btDiasInhabiles&target=print (government_official_annual_schedule)
- Colombia Function Public – Ley 51 de 1983 — https://www1.funcionpublica.gov.co/eva/gestornormativo/norma.php?i=4954 (government_official_legislation)
- Colombia Function Public – official interpretation of Ley 51 — https://www1.funcionpublica.gov.co/eva/gestornormativo/norma.php?i=204664 (government_agency_interpretation)

Data freshness: `static`. Pinned co-government-public-2026.1 package.

## API

- `GET https://tttkmbb.com/api/v1/calculate/colombia-public-add-working-days?start_date=…&working_days=…`
- `POST https://tttkmbb.com/api/v1/calculate/colombia-public-add-working-days` 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/colombia-public-add-working-days · OpenAPI operationId `add_co_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": "colombia-public-add-working-days", "inputs": {…}}`

## Example

- Zero offset is identity: inputs `{"start_date":"2026-01-01","working_days":0}` → `{"result_date":"2026-01-01","working_days_added":0}`

```
GET https://tttkmbb.com/api/v1/calculate/colombia-public-add-working-days?start_date=2026-01-01&working_days=0
```

## Limitations

This package covers Colombia's nationwide statutory paid-rest holiday layer over a Saturday-Sunday baseline. Municipal, departmental, school, bank, employer, sector and local patron-saint schedules are not inferred. Future annual calendars require refreshed official evidence. Skip Saturday/Sunday and exact pinned authority events; do not add unverified substitute days. All values are computed from the formula above; no measurement or live data is involved.

## FAQ

**Why is 12 January a holiday?**

Ley 51 de 1983 moves the paid rest day for 6 January to the following Monday when it does not fall on Monday.

**Does this cover every Colombian municipality and employer?**

No. This is the nationwide statutory paid-rest layer; municipal, departmental, bank, school, employer and sector calendars require separate evidence.

**Are future years included?**

No. The package pins 2026 only and must be refreshed from the next official calendar.

## Related

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