add_china_working_days

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Use this when you need a deadline or settlement date a stated number of mainland China national working days before or after a 2024-2026 date. 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 calendar days, a sector-specific settlement calendar, a local holiday calendar, or a result outside the 2024-2026 coverage. What it computes: Adds or subtracts official mainland China working days, skipping holiday periods and ordinary weekends while counting State Council-designated weekend makeup workdays. Example user requests: What date is 5 China working days after 2026-09-24, accounting for Mid-Autumn and National Day? | 从2026年9月18日起往后数5个中国工作日是哪天？ | Subtract 10 official mainland China business days from 2026-03-02. Inputs: start_date (date); working_days (integer, working days). Complete JSON argument examples: {"start_date":"2026-09-24","working_days":5} | {"start_date":"2026-09-18","working_days":5} Outputs: start_date, result_date, result_weekday, result_is_working_day, working_days_added [working days], calendar_days_elapsed [days], non_working_days_skipped [days], adjusted_workdays_counted, source_document_ids, dataset_version, coverage_start, coverage_end. Formula: move one calendar day at a time in sign(working_days); decrement the remaining count only when is_working_day(date) is true Direct REST fallback: POST https://tttkmbb.com/api/v1/calculate/china-add-working-days with the same JSON input fields. Do not guess another /api/* path. Docs: https://tttkmbb.com/everyday/china-add-working-days.md