Conversion between the Western calendar and Chinese calendar

Astro: Go Astronomy Algorithms Library - Chinese Lunar Calendar, Solar/Lunar Eclipses, Sun/Moon/Planet Positions, Rise/Set, Planet Events, Stars, Coordinates, Orbits, Sundials and Lightweight Ephemerides (天文算法 Go 库：农历、日月食、日月行星位置、升落、行星天象、恒星、坐标、轨道、日晷与轻量星历)

Almanac 历

solar_terms_24 calculates and collects 24 solar terms by using NASA JPL Horizons API.

Accurately calculate times of 24 solar terms using JPL HORIZONS. 用噴射推進實驗室HORIZONS网上天文数据精确计算24节气时间（精确到毫秒）

Chinese astronomical calendar, bazi (四柱八字), and divination for TypeScript. Solar terms (節氣) to sub-second precision, lunar calendar (農曆), flying stars (紫白九星), almanac flags (神煞), Six Ren (大六壬) — zero dependencies.

High-precision Chinese lunar calendar tool based on JPL DE ephemeris.

Vietnamese Lunar Calendar Expert Engine with Can Chi, Solar Terms, and Auspicious Hours

A precision lunisolar calendar generator that produces structured datasets for Lunar New Year metadata across large year ranges.

中国日历全栈 AI Agent Skill — 法定节假日(国务院调休)/公农历互转/二十四节气/工作日计算/请假桥接，13个端点，自包含零API。Claude Code/Codex/Hermes Agent 通用。