1. These stars are rising heliacally in the 17th hour according to my astronomy book:
17h / 24h * 365.25 = 258.7 and I could have included also Ga7-25, but for various reasons I did not. Dates with bis signs, e.g. "17 at Ga7-10, are 63 days earlier than dates with prim signs, e.g. '19. Thus 323 - 260 = 63. Dates with bis signs are intended to illustrate dates at the time of Taurus, while dates with prim signs are intended to show dates which could have been current when the G text was created. Acrab, for instance, rose heliacally in November 20 according to my astronomy book, but I have assumed a shift forward for the stars with 1 day (corresponding to what precession may have caused) since the time of G. Day 260 is September 17 and from the glyph number for Ga7-10 (180) it is easy to imagine 260 - 180 = 80 as the time from January 1 to March 21. Each place above where I have noted the glyph number the rule is that the bis date is equal to the glyph number + 80. Where I have noted the assumed right ascension day at the time of G, e.g. *242 at Ga7-9, the prim date can similarly be found by adding 80. 242 + 80 = 322 (= the number of days from January 1 to November 18). In my suggested structure we can see that Antares would have risen heliacally close to autumn equinox at the time of Taurus. | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
