The principles underlying the Kazakh Nomad calendar are quite simple. The beginning of months coincides with the moment when the Moon passes the Pleiades. As the difference between the synodic and sidereal cycles of the Moon is about 2 days, each...
Chinese Calendrics 16.16 updated
A program to convert between dates in Chinese, Vietnamese and Japanese lunar calendars and dates in the Gregorian and Julian calendars, and to find lunar new year's day and leap months for any year in the Asian calendars. Can list anniversaries...
Equinoxes, Solstices and Cross-Quarter Days 5.42 updated
Software to calculate accurate dates and times for equinoxes, solstices and the Celtic cross-quarter days. The cross-quarter days are those midway between the equinoxes and solstices. For example, Imbolc is midway between the northern winter...
Lunar Calendars and Eclipse Finder 15.66 updated
A program to search for eclipses (lunar, solar, total, annular 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 five lunar calendars...
Solar Model 3D 1.1
3D real time modeling of Solar...
Gassmann's Fluid Substitution helps predict velocity changes resulting from different pore-fluid...
A free Science & education program for...
Display information about any element of the periodic...
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