Timepoint

Calculate the number of days from any date to a target date or the next occurrence of a traditional Chinese festival (Spring Festival, Lantern Festival, Dragon Boat Festival, Qixi, Mid-Autumn Festival, Double Ninth Festival, or Qingming). Returns the resolved target date, days difference, and direction (future/past/today).

计算从任意起始日期到目标日期，或到下一次传统节日（春节、元宵节、端午节、七夕节、中秋节、重阳节、清明节）的天数差。返回解析后的目标日期、天数差及方向（未来/过去/今天）。

Endpoint: GET /timepoint?target=spring_festival&from=2026-01-01 (or target=YYYY-MM-DD for a custom date)