solar-terms

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.

轻巧的 macOS 菜单栏农历万年历 — 农历、节气、法定节假日一目了然。Rust + Slint 原生渲染,内存占用极低。

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。

最严谨的八字命理解引擎——开源·可追溯·可验证：确定性排盘（节气精确切分/真太阳时/夏令时校正），1000条带古籍出处的断语库，零外部依赖，单文件离线UI，支持流年/流月/流日/合婚/六亲分析

中式日撕历 Windows 桌面应用：公历、农历、二十四节气与硬卡纸撕页交互

Chinese lunisolar calendar for TypeScript. Second-accurate solar terms from JPL DE440. Absolute instants and wall-clock readings are distinct types that cannot be mixed. Zero runtime dependencies; no Node/DOM/Intl APIs.

八字排盘 · 紫微斗数排盘引擎 + 分析方法论，打包为 Claude Skill | BaZi & Zi Wei Dou Shu (Purple Star Astrology) chart calculation engine with written methodology. Zero dependencies, pure Python.

Open-source BaZi (Four Pillars, 八字) calculator engine in TypeScript — true solar time, astronomical solar terms, Ten Gods, Shen Sha, luck pillars, monthly flow, compatibility. Zero deps. By stillnessdao.com

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.

Reproducible BaZi and Four Pillars test vectors for timezone, DST, true solar time, solar-term boundaries, and unknown birth time.

面向 iPhone、iPad 与 Mac 的中国法定班休、传统节日和二十四节气 ICS 订阅，数据可追溯、构建可复现。