Investigating what pure glyphs might mean, lead to the discovery of how 'summer' is defined by mago and 'humpback':

Ka3-1	Ka3-2	Ka3-3	Ka3-4	Ka3-5	Ka3-6	Ka3-7
		50
Ka4-14	Ka4-15			*Kb2-14	*Kb2-15	*Kb2-16
48	'summer'				101	102

There are 52 glyphs in 'summer', 26 from Ka4-15 up to the 2nd Rei (Kb1-11) and 26 from this Rei up to *Kb2-15.

We can try to count 26 glyphs beyond *Kb2-14, beginning with *Kb2-15 as number 1. Kb4-5 will then be number 25 (not 26):

Kb4-1	Kb4-2	Kb4-3	Kb4-4	Kb4-5
21	22	23	24	25

A henua concave at right with a 6-feather maro should mark the end of a sun cycle. In E we found the 'light mauga' cycle to be 6 * 25 = 150 glyphs long.

The calendar probably has several functions and we should not be daunted. We continue counting.