There is a way to ascertain whether April 17 could be at the beginning of side b or not, viz. by looking at the end of side b and count backwards from there:
We should remember that March 29 can be read as 3-29 and an allusion to the Gregorian day when the Sun rose together with Antares.
740 (Cb14-19) - 392 (glyphs on side a) = 348 (glyphs on side b). 3 + 342 + 3 = 348. April 19 (90 + 19 = day 109 in an ordinary year) + 345 (glyphs to Cb14-19) = 109 + 345 = 454 = 365 + 89 (March 30 in an ordinary year). 14 * 19 = 266 at Cb14-19 can be contrasted with 14 * 29 = 406 at *Ca14-29. But it ought to have been a calendar with 366 days for the year, which means March 29 would have been day 89. I suggest this 366 day long year could have had a leap day of the Julian kind:
... The leap day was introduced as part of the Julian reform. The day following the Terminalia (February 23) was doubled, forming the 'bis sextum - literally 'double sixth', since February 24 was 'the sixth day before the Kalends of March' using Roman inclusive counting (March 1 was the 'first day'). Although exceptions exist, the first day of the bis sextum (February 24) was usually regarded as the intercalated or 'bissextile' day since the third century. February 29 came to be regarded as the leap day when the Roman system of numbering days was replaced by sequential numbering in the late Middle Ages ... | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
