CAL20000 STAR MAP

CAL20000 STAR MAP is a comprehensive lunisolar calendar and star map extension providing high-precision calculations of the Sun, Moon, and planetary positions. Covering a vast timeframe from 9,999 BCE to 10,000 CE, it features detailed month/day tables, star maps based on the Yale Bright Star Catalog, and ephemeris data.

The extension supports Korean and Chinese calendars, including features like sexagenary day units, 24 solar terms, lunar phases with eclipse data, and various celestial events such as conjunctions, oppositions, and planetary retrogrades. Additional functionalities include Kusung and KiMoon calendars, Korean and Buddha eras, Islamic Hijra calendar, Easter date calculations, and lunar orbit information. This tool is ideal for astronomers, historians, and enthusiasts interested in ancient and modern calendar systems combined with astronomical observations.