I admit it was tricky figuring out how to read the tables, but I *think* I have it working for the current year.
December 3rd (same day of week as January 1st) shows a lunar age of 10 days. Adding the Gregorian epact of 10 (*), plus 4 days between the 3rd and today, gives an age of 24 days. Next New Moon is December 11th (**), 4 more days from now = 28 days old, or New Moon. Dave (*) http://www.staff.science.uu.nl/~gent0113/easter/eastercalculator.htm (**) http://www.moongiant.com/phase/12/9/2015 _____ From: sundial [mailto:[email protected]] On Behalf Of graham stapleton Sent: Monday, December 07, 2015 7:16 AM To: [email protected] Subject: Calculating age of the moon from the epact Dear All, The origin of my query is the seamen's boxes of Pieter Holm that feature a table enabling a calculation from the epact - integers only - of the (approximate) age of the moon. Attempting to use the illustrated figures for the current year has been unsuccesful and a general trawl of the web has not provided anything that helps. A method applicable for any date would be ideal, but at least for the first of the month. Thank you. Using the Tables on the Seaman's Tobacco Box of Pieter Holm <http://www.staff.science.uu.nl/%7Egent0113/holmbox/holmboxtables.htm> <http://www.staff.science.uu.nl/%7Egent0113/holmbox/holmboxtables.htm>
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