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Add Denmark Working Days

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

When to use

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.

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.

Inputs

Parameter	Type	Unit	Required	Description
`start_date`	date		yes	Gregorian start date in 2026-2027.
`working_days`	integer		yes	Signed offset; start date excluded for non-zero offsets. Range: ≥ -1000, ≤ 1000

Outputs

Output	Type	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.

Example

Zero offset is identity: {"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

Machine access

API: GET https://tttkmbb.com/api/v1/calculate/denmark-public-add-working-days (query parameters) or POST with a JSON body {"inputs": {...}}
Schema: https://tttkmbb.com/api/v1/calculators/denmark-public-add-working-days · Markdown: https://tttkmbb.com/everyday/denmark-public-add-working-days.md · JSON definition: https://tttkmbb.com/everyday/denmark-public-add-working-days.json
MCP: server https://tttkmbb.com/mcp, tool run_calculator with calculator_id="denmark-public-add-working-days"
OpenAPI operationId: add_dk_working_days
Freshness: static. Authentication: none. Rate limit: fair use (see rate limits).

Sources

borger.dk – Danish public holidays and non-holidays (government_guidance)
Retsinformation – Helligdagsloven (government_legal_text)
Retsinformation – abolition of Store Bededag as a public holiday (government_legal_text)
Retsinformation – consequences of abolition of Store Bededag (government_legal_text)

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 calculators

Denmark Working Day — Inspect a date and source evidence.