julian day number (3 products)

Chinese Calendrics 6.26 (Shareware, $25.00)

A program to convert between dates in various Chinese calendars and dates in the Gregorian and Julian calendars, and to find lunar new year's day and leap months for any year. Can list anniversaries of Chinese lunar dates such as birthdays. Supports 60-year, 60-month and 60-day cycles, includes Chinese names, and allows searching for dates and times of full moons, dark moons, solar terms, equinoxes, solstices and more.

Easy Date Converter 7.56 (Shareware, $25.00)

Does date arithmetic

Lunar Calendars and Eclipse Finder 5.44 (Shareware, $25)

This software allows you to: (i) Display the current phase of the Moon. (ii) Calculate the phase of the Moon for any time in the past or future within a 9000-year period. (iii) Convert between dates in various calendars (three solar calendars, the Gregorian Calendar, the Julian Calendar and the Solar Liberalia Triday Calendar, and three lunar calendars, the Goddess Lunar Calendar, the Meyer-Palmen Solilunar Calendar and the Lunar Liberalia Triday Calendar). (iv) Move forward or backward from a given date (and time) either by a period such as one month or by any number of days. (v) Search for the next or previous full moon, dark moon or first or last quarter. (vi) Search for the next or previous eclipse of a certain type: lunar or solar, lunar, total lunar, total or umbral lunar, solar, total solar or annular solar.