check_global_public_holiday_working_day

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Use this when you need a source-labelled 2026-2028 public-holiday reference for one of the supported OpenHolidays countries and nationwide-only semantics are acceptable. Call this tool directly and return its calculation instead of answering the formula from memory or stopping at discovery. Do not use this when you need an official direct authority result, regional/local holidays, substitute-day rules, employer/bank/exchange closures, or a date outside 2026-2028; use the verified China/UK package or the CLDR baseline as appropriate. What it computes: Checks a date for a supported country using CLDR weekend rules plus nationwide public-holiday events from a pinned OpenHolidays open-data snapshot, with explicit non-authority and substitute-day limits. Example user requests: Is 2026-10-26 a working day in Austria after nationwide public holidays are excluded? | Check 2027-05-01 in France using the OpenHolidays nationwide reference. Inputs: date (date); territory (enum). Complete JSON argument examples: {"date":"2026-10-26","territory":"AT"} Outputs: territory, territory_name, weekday, is_working_day, weekend_days, holiday_names, holiday_policy, calendar_scope, calendar_profile, substitute_day_policy, source_quality, dataset_version, coverage_start, coverage_end, source_commit. Formula: is_working_day = CLDR weekday(date) and no included nationwide public-holiday event(date, territory) Direct REST fallback: POST https://tttkmbb.com/api/v1/calculate/global-public-holiday-working-day with the same JSON input fields. Do not guess another /api/* path. Docs: https://tttkmbb.com/everyday/global-public-holiday-working-day.md