check_ng_working_day

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Use this when you need a deterministic Nigeria Nigeria 2026 nationwide federal public-holiday calendar over a Saturday-Sunday weekend result. Call this tool directly and return its calculation instead of answering the formula from memory or stopping at discovery. Do not use this when this is the nationwide federal public-holiday layer, not a universal private-employer, state, local-government, school, banking, market, diplomatic-mission or sector calendar. Ministry of Interior announcements take precedence over conflicting secondary or diplomatic snapshots for federal dates. Eid dates are lunar and can be amended by later official notice. The Public Holidays Act permits special or substituted dates and explicitly does not create an automatic extra day for a holiday falling on Saturday or Sunday; no replacement day is invented here. What it computes: Checks a date against the Saturday-Sunday weekend baseline and exact 2026-2026 authority events. Example user requests: Nigeria: Federal Democracy Day. | Nigeria: Ordinary federal working day. Inputs: date (date). Complete JSON argument examples: {"date":"2026-06-12"} | {"date":"2026-06-16"} Outputs: territory, territory_name, weekday, is_working_day, day_type, holiday_names, holiday_kinds, holiday_details, calendar_scope, holiday_policy, substitute_day_policy, calendar_profile, dataset_version, sources. Formula: is_working_day = not an official Saturday/Sunday weekend date and no exact authority event Direct REST fallback: POST https://tttkmbb.com/api/v1/calculate/nigeria-public-working-day with the same JSON input fields. Do not guess another /api/* path. Docs: https://tttkmbb.com/everyday/nigeria-public-working-day.md