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Belgium Working Day

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

When to use

You need a deterministic Belgium Belgium ten statutory private-sector public holidays for 2026-2027 result.

Do not use when: Private-sector statutory core only; substitute dates, public-service/community/regional holidays, sector agreements, employer, school, bank and municipal schedules are not inferred.

Example user requests

Belgium: Belgian National Day.
Belgium: Ordinary weekday.

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.

Inputs

Parameter	Type	Unit	Required	Description
`date`	date		yes	Gregorian date in Belgium coverage.

Outputs

Output	Type	Description
`territory`	string	BE (Belgium).
`territory_name`	string	Belgium
`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	Belgium ten statutory private-sector public holidays for 2026-2027
`holiday_policy`	string	The ten statutory Belgian labour public holidays are included; the public-sector, community, regional, sector and employer calendars are not substituted into this national core.
`substitute_day_policy`	string	No substitute-day closure is inferred. If a statutory holiday coincides with Sunday or an undertaking's ordinary inactivity day, the substitute day is fixed by the competent joint committee or undertaking.
`calendar_profile`	string	belgium-public-holidays
`dataset_version`	string	be-legal-public-holidays-2026-2027.1
`sources`	list	Authority and legislation sources.

Example

Belgian National Day: {"date":"2026-07-21"} → {"is_working_day":false,"day_type":"public_holiday"}

Ordinary weekday: {"date":"2026-07-22"} → {"is_working_day":true,"day_type":"regular_workday"}

GET https://tttkmbb.com/api/v1/calculate/belgium-public-working-day?date=2026-07-21

Machine access

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

Sources

Belgian Federal Public Service Employment – Public holidays (government_labour_guidance)
Belgium.be – legal holidays (government_calendar_reference)
Belgian Federal Public Service Employment – public-holiday regulation (government_regulation_index)

FAQ

Are substitute days included?

No. Belgium fixes a replacement rest day through the competent joint committee or undertaking when a statutory holiday overlaps an ordinary inactivity day; this package preserves the statutory date and does not infer the replacement.

Related calculators

Add Belgium Working Days — Offset through the same authority package.