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Add Colombia Working Days

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

When to use

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.

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 2026-2026.
`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	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.

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/colombia-public-add-working-days?start_date=2026-01-01&working_days=0

Machine access

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

Sources

Colombia Ministry of Finance – 2026 holiday calendar (government_official_annual_schedule)
Colombia Function Public – Ley 51 de 1983 (government_official_legislation)
Colombia Function Public – official interpretation of Ley 51 (government_agency_interpretation)

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 calculators

Colombia Working Day — Inspect a date and source evidence.