check_china_working_day

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Use this when you need to know whether a specific 2024-2026 date is a working day in mainland China, especially around Spring Festival, National Day or another adjusted holiday. 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 a Hong Kong, Macao, Taiwan, local minority, school, employer, bank-settlement or stock-exchange calendar, or a year outside 2024-2026. What it computes: Checks whether a date is an official national working day in mainland China, including weekend makeup workdays (调休上班) and multi-day holiday periods from State Council notices. Example user requests: Is Sunday 2026-01-04 an official working day in mainland China? | 2026年9月20日是休息日还是调休上班？ | Will mainland China offices normally work on 2026-02-18? Inputs: date (date). Complete JSON argument examples: {"date":"2026-01-04"} | {"date":"2026-02-18"} Outputs: date, weekday, is_working_day, day_type, holiday_name, holiday_name_zh, status_basis, jurisdiction, source_document_id, source_published_at, source_url, dataset_version, coverage_start, coverage_end. Formula: adjusted weekend workday override → working; else official holiday-period override → non-working; else Monday-Friday → working; Saturday-Sunday → non-working Direct REST fallback: POST https://tttkmbb.com/api/v1/calculate/china-working-day with the same JSON input fields. Do not guess another /api/* path. Docs: https://tttkmbb.com/everyday/china-working-day.md