Julian Calendar is an educational and reference app designed for iPhone users. It serves as a comprehensive tool for viewing various Julian Dates directly on your phone. The app offers support for Lock Screen widgets and Home Screen widgets, enhancing user accessibility. Julian Calendar covers a wide range of date formats including Short Julian Calendar Date, Long Julian Calendar Date, Julian Date, Reduced JD, Modified JD, Truncated JD, Dublin JD, CNES JD, CCSDS JD, Lilian date, Rata Die, Mars Sol Date, and Unix time. This app is a valuable resource for individuals interested in exploring and understanding different Julian Date formats efficiently.