Astral.js — Astronomical Calculations in Javascript

Astral.js is a Javascript library that makes it easy to:

• calculate special astronomical events, i.e. eclipses, planets alignments
• calculate special the dates/times of equinoxes, solstices, sunrise/sunset

Astral.js is an implementation in Javascript of some of the algorithms in

Jean Meeus "Astronomical Algorithms"
            Willmann-Bell, Inc.
            2nd edition (1998 with corrections as of June 15, 2005);
            ISBN: 0-943396-61-1
          

Nachum Dershowitz, Edward M. Reingold "Calendrical Calculations"
            Cambridge University Press; 3rd edition (December 10, 2007)
            Paperback; ISBN-13: 9780521702386
            E. M. Reingold and N. Dershowitz,
            3rd ed., Cambridge University Press, 2008.
          

STATUS

not even beta but porting from PyCalCal which is instead pretty well tested and usable.

Acknowledgements

I want to thank:

• Jean Meeus for having made digestable the complicated algorithms through his numerous books
• Prof.s Reingold and Dershowitz for their prompt replies to my (sometimes silly, other times pertinent) questions
• my family, Gilda and the kids...it takes a lot of time to sort things out even when I am together with you
• my parents and parents-in-law for their past and continuous support