The other hahe glyph (Yc3-7) is number 23 in calendar II:

Yc1-1	Yc1-2	Yc1-3
Yc1-4	Yc1-5	Yc1-6	Yc1-7
Yc1-8	Yc1-9	Yc1-10
Yc2-1	Yc2-2 (12)
Yc2-3	Yc2-4	Yc2-5	Yc2-6	Yc3-1	Yc3-2 (18)
Yc3-3	Yc3-4 (20)	Yc3-5	Yc3-6	Yc3-7	Yc3-8 (24)

Also hahe in Yc3-7 is evidently located in the season when one year must be 'cleaned away'. 23 is 1 less than 24 and the position is therefore quite similar:

calendar I
	Ya1-1 (7)	Ya1-2	Ya1-3	Ya1-4 (10)
calendar II
	Yc3-5 (21)	Yc3-6	Yc3-7	Yc3-8 (24)

If we arrange calendar I to begin with Yb3-1, then the distance from hahe in Ya1-3 to hahe in Yc3-7 will be (42 - 9) + 23 = 56. Counted the other way (from hahe in Yc3-7 to hahe in Ya1-3) the distance will be 84 - 56 = 28, and we can perceive 84 as 3 * 28 (= 6 * 14).

	55		19	8
Ya1-3 (1)		Yc3-7 (57)
56 = 8 * 7		28 = 4 * 7
84 = 12 * 7

These two hahe glyphs here emerge as signs which mark beginning.