User Manual for
Lunar Calendars and Eclipse Finder


Note that Lunar Calendars and Eclipse Finder uses
the astronomical year numbering system
for all years in all calendars which it supports.

Acknowledgements: This software was developed by Peter Meyer in January-February 2002 and revised at various times up to July 2011. Support for the Hermetic Lunar Week Calendar was added in April/May 2006. The Liberalia Triday Calendar, the Hermetic Lunar Week Calendar, the Archetypes Calendar and the Meyer-Palmen Solilunar Calendar were invented by Peter Meyer during 1999-2010 (the last in collaboration with Karl Palmen). The lunar phase and eclipse calculations are done using a translation into C of a FORTRAN routine originally written by astronomer Robert van Gent (based on Jean Meeus's Astronomical Algorithms, Willmann-Bell Inc., Richmond, 1991, pp. 319-324 & 349-358), who kindly gave permission for its use as the basis for the astronomical functions in this software. Thanks also to Karl Palmen and Simon Cassidy for helpful comments during the development of the early versions.

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