check_vn_working_day

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Use this when you need a deterministic Vietnam Vietnam public-sector 2026 holiday schedule and nationwide statutory paid holidays 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 public-sector and statutory paid-holiday layer only; private-employer, non-Saturday/Sunday workweeks, provincial, sector, bank, school and employer schedules are not inferred. The proposed four-day 2026 Vietnam Cultural Day public-sector arrangement is not encoded until finally approved. What it computes: Checks a date against the Saturday-Sunday weekend baseline and exact 2026-2026 authority events. Example user requests: Vietnam: New Year transfer. | Vietnam: Vietnam Cultural Day. Inputs: date (date). Complete JSON argument examples: {"date":"2026-01-10"} | {"date":"2026-11-24"} 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/vietnam-public-working-day with the same JSON input fields. Do not guess another /api/* path. Docs: https://tttkmbb.com/everyday/vietnam-public-working-day.md