# Add Denmark Working Days

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

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

## Purpose

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

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

**Do not use when:** Nationwide statutory list only. Collective-agreement, employer, sector, school, bank, local and customary half-day closures are not inferred; Store Bededag is not a holiday from 2024 onward.

## Example user requests

- Add or subtract Denmark working days around Ascension Day.
- Add or subtract Denmark working days around Constitution Day is not a statutory holiday.


## Input

| Parameter | Type | Unit | Required | Description |
| --- | --- | --- | --- | --- |
| `start_date` | date |  | required | Gregorian start date in 2026-2027. |
| `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 |  | DK (Denmark). |
| `territory_name` | string |  | Denmark |
| `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 |  | Denmark nationwide statutory public holidays for 2026-2027 |
| `holiday_policy` | string |  | Danish nationwide statutory public holidays are included; May 1, Constitution Day, Christmas Eve and New Year's Eve are explicitly not inferred as public holidays. |
| `substitute_day_policy` | string |  | No substitute-day closure is inferred when a statutory holiday falls on a weekend. |
| `calendar_profile` | string |  | denmark-public-holidays |
| `dataset_version` | string |  | dk-statutory-public-holidays-2026-2027.1 |
| `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

- borger.dk – Danish public holidays and non-holidays — https://www.borger.dk/arbejde-dagpenge-ferie/Oversigt-ferie/loenmodtager-og-ferie (government_guidance)
- Retsinformation – Helligdagsloven — https://www.retsinformation.dk/eli/lta/2012/1023 (government_legal_text)
- Retsinformation – abolition of Store Bededag as a public holiday — https://www.retsinformation.dk/eli/lta/2023/270 (government_legal_text)
- Retsinformation – consequences of abolition of Store Bededag — https://www.retsinformation.dk/eli/lta/2023/214 (government_legal_text)

Data freshness: `static`. Pinned dk-statutory-public-holidays-2026-2027.1 package.

## API

- `GET https://tttkmbb.com/api/v1/calculate/denmark-public-add-working-days?start_date=…&working_days=…`
- `POST https://tttkmbb.com/api/v1/calculate/denmark-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/denmark-public-add-working-days · OpenAPI operationId `add_dk_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": "denmark-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/denmark-public-add-working-days?start_date=2026-01-01&working_days=0
```

## Limitations

Nationwide statutory list only. Collective-agreement, employer, sector, school, bank, local and customary half-day closures are not inferred; Store Bededag is not a holiday from 2024 onward. 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

**Are May 1, Constitution Day, Christmas Eve or New Year's Eve public holidays?**

No. The official Danish government guidance says these dates are not statutory public holidays; an agreement or employer can still grant time off.

## Related

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