Get major solar term (中气) for a given JDE
A major solar term (中气) occurs when the apparent solar longitude is a multiple of 30° starting from 330° (Z1=雨水, Z2=春分, ...).
Julian Ephemeris Day
Object with term number (1-12) and solar longitude in degrees
Low-level pure functions for calendar conversion. Most users should prefer the ChineseDate value object API. These functions are useful when you need fine-grained control or want to build custom logic on top of the core algorithms.