Julian Day Number Software

Does date arithmetic (adds a number of days to a date and calculates the number of days between two dates) and converts among Gregorian dates, Julian dates, Annus Novus dates, Julian day numbers and day-in-year dates of the form yyyyddd. Designed for easy performance of date calculations. Program is trilingual: English, German and Spanish.

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Lunar Calendars and Eclipse Finder

A program to search for eclipses (lunar, solar, total, annual and umbral), to calculate the phase of the Moon at any given date and time and to convert between dates in the Gregorian and Julian calendars and dates in various lunar calendars (Goddess, Meyer-Palmen and Liberalia Triday).

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