Epoch Calc update online

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Feb 16

2011

by James Q. Jacobs

An Epoch Calc updated version is now online.  Most recently, all constants were integrated into a singular, sidereal-based set derived entirely from orbital constants.  The formulations of all derived variables is now displayed and the AeGeo code is expanded.   The date setting now includes months and days, and conversion to Julian date and between Julian and Gregorian calendars is automatic (the latest version of Excel is needed to support its floor.absolute function).

Epoch Calc v2011 = epoch_calc_v2011.xls, an Excel applet.

Calculate temporal variation in astronomic constants, obliquity of the ecliptic, eclipses, and more.  Some intro here: Eclipse Calc, an eclipse calculator

Also, check out the latest release of archaeoastronomy research in the ArchaeoBlog:

Newark Earthworks and the Lunar Standstill Period
http://www.jqjacobs.net/archaeology/newark_arcs.html#2011.01.24

James Q. Jacobs
 Anthropologist, Archaeologist