We begin by counting distances:

side a			side b
183		486	117		271		274
	Aa3-9 (184)			Ab2-36 (788)		Ab5-66 (1060)
670			664
1334

Immediately the ordinal number for Aa3-9 can be noted. Day 184 lies 180 days earlier than day 364, which fact seems to be understood in the K text:

...
*Kb5-1 (173)	*Kb5-2	*Kb5-3	*Kb5-4	*Kb5-5	*Kb5-6
	...			...
*Kb5-7	*Kb5-8	*Kb5-9	*Kb5-10	*Kb5-11	*Kb5-12 (184)
*Kb5-13	*Kb5-14	*Kb5-15	*Kb5-16 (188)
*Kb5-12 is drawn in full, and 184 + 180 = 364. Neither *Kb5-8 (180) nor *Kb5-11 (183) is visible. 180 + 180 = 360 and 183 + 180 = 363 (the day of Rogo).

Henua in *Kb5-2 is drawn faultlessly and 174 + 180 = 354 = 12 * 29.5.

If it has been counted from winter solstice hahe in Aa3-9 must be close to summer solstice, maybe even indicating it. We should look at the surrounding glyphs.