I believe we can assume that at the beginning of the new manzil year (Sheratan 1 = May 17) the 'swallowing mouth' (vaha kai) has to be inverted as a sign of negating the end station. The 'hour-glass' has to be turned upside down when all the sands of time have run out. It is not a time of disappearance ('death', 'leaving', oho) but of return ('birth', hanau) - although these events are not far apart. From stretch from alfa to omega is the maximum length, but from omega to alfa there is no distance at all. They are like twins sitting back to back.

Then we can go back to the C text and say with some certainty that the not inverted swallowing - i.e. upside down - 'fish mouth' in Ca12-17 illustrates how in February 17 the cycle of 14 * 29½ is ending:

Saad Al Thabib 6	7 (277)
February 16	17 (413)
Ca12-16	Ca12-17 (333)
oho te vae	kua pure ia
no stars listed	η Piscis Austrini (333.4)
August 18	19 (231)
An Nathra 2	3 (95)
Tseen Ke (149.9), ν Leonis (150.1)	π Leonis (150.6)

The glyph number 333 (= the RA day for η Piscis Austrini) is equal to 413 - 80 and indicates the number of days from March 21.

In the night of February 17 the stars rising heliacally in August 19 (231) could be seen close to the Moon, e.g. π Leonis (150.6), and 231 is not only the day number for August 19 but also the glyph number for Gb1-1, where a birth (hanau) is under way:

Gb1-1 (231)	Gb1-2	Gb1-3 (*296)
χ Sagittarii (293.6), Deneb Okab (294.0)	Albireo (295.5)	no star listed
January 9 (374)	10	11
Shaula 7	8	9 (240)

In the nakshatra view of February 17 it was possible to be 'read' the opposite of 'leaving' (oho). And perhaps January 10 was regarded as the time for the new Gregorian year to be 'born'. 365 - 10 = 355 could allude to the solstice in December 21 (355). January 10 (375) - 231 = 144 (= 12 * 12).

Furthermore, in order to ascertain my suggested conclusions we should go back to the Q text because 333 (the glyph number for vaha kai in Ca12-17) appears as the sum of the number of glyphs on the back side of the tablet up to the end of line b8:

a1	*23?	23	b1	51	51
a2	43	66	b2	46	97
a3	41	107	b3	*51?	148
a4	*43?	150	b4	*39?	187
a5	55	205	b5	*42?	229
a6	*49?	254	b6	*33?	262
a7	*41?	295	b7	*39?	301
a8	47	342	b8	32	333
a9	45	387	b9	*12?	349
sum	*387?		sum	*345?

*Qb8-29	*Qb8-30	*Qb8-31	*Qb8-32 (720)

*Qb8-32 is glyph number 387 + 333 = 720, and the vanishing heads could mean a solar cycle of 360 days was ending here. There is no fist ahead in *Qb8-30.

295 + 333 = 628 = 2 * 314.