check_ru_working_day

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Use this when you need a deterministic Russia Russia federal statutory public holidays and Government-published 2026 transfer days 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 package covers the federal statutory/public-holiday layer and the Government-published 2026 transfer days over a Saturday-Sunday baseline. Regional holidays, republic/local holidays, employer, bank, school, shift, sector and collective-agreement schedules are not inferred. Future annual transfer resolutions require a refreshed package. What it computes: Checks a date against the Saturday-Sunday weekend baseline and exact 2026-2026 authority events. Example user requests: Russia: Russia New Year's holiday. | Russia: Published transfer day. | Russia: Ordinary Russia working day. Inputs: date (date). Complete JSON argument examples: {"date":"2026-01-05"} | {"date":"2026-01-09"} | {"date":"2026-09-14"} 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/russia-public-working-day with the same JSON input fields. Do not guess another /api/* path. Docs: https://tttkmbb.com/everyday/russia-public-working-day.md