shareware in Astronomy downloads
Chinese Calendrics
17.07 downloadThe Chinese Lunar Calendar is a lunisolar calendar, consisting of months corresponding exactly to lunar cycles and years which stay more-or-less in sync with seasonal years. The structure of the calendar ...
Equinoxes, Solstices and Cross-Quarter Days
6.27 downloadThis software calculates accurate dates and times for equinoxes, solstices and the Celtic cross-quarter days (Imbolc, Beltane, Lughnassad and Samhain). The cross-quarter days are those midway between the equinoxes and solstices. ...
Lunar Calendars and Eclipse Finder
17.17 downloadThis 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 ...
CyberSky
5.1.1 downloadCyberSky is an accurate, yet easy-to-use planetarium program that provides an excellent way to learn about astronomy and explore the sky visible in the distant past, the present, and the far-off ...
StarStrider
2.8.7 downloadStarStrider is a fully three-dimensional planetarium and 'software star ship'. You can visit not only the planets and moons of our solar system, but also hundreds of thousands of other stars. ...
AstroNav
1.1.6 downloadUsing the same standards of accuracy as published tables but with a catalogue extending beyond Barnard's Star; it can be used as a sight calculator, a definative astronomical reference or simply ...
Colliding Galaxies
1.22 downloadColliding Galaxies is a program to simulate interacting galaxies. It is possible to create simulations up to one million particles (stars). Colliding Galaxies comes with an external program (Shape Creator) with ...
Dr. Regener Sun-Moon-Calendar
9.0 downloadDr. Regener Sun-Moon-Calendar calculates the sets, rises and phases of the sun and moon. It covers over 2000 locations in 110 countries. The program includes signs of the Zodiac, Saint's days, ...