We have noticed how the Mamari moon calendar is full with significant numbers, e-g. glyph number 192 (equal to the number of glyphs in K) at Omotohi:

The importance of the first glyph (Ca6-17) is marked by its ordinal number counted from Ca1-1, viz. 157 = 314 / 2.

In G number 6-17 has likewise been chosen for an important first glyph:

Gb6-17 (400)	Gb6-18	Gb6-19	Gb6-20
Gb6-21	Gb6-22	Gb6-23	Gb6-24

For some reason 6-17 apparently was used by the rongorongo writers as the first glyph in major time cycles. And Aa6-17 is a moe glyph, a glyph which announces the first light although the new 'person' still is below the horizon:

Aa6-12	Aa6-13	Aa6-14	Aa6-15	Aa6-16 (432)	Aa6-17 (433)	Aa6-18	Aa6-19
237		238		239		240

Moa in Aa6-16 is followed by moe, then a tagata (at left) with a strange sign at right, the first glyph of day 240.

Day 237 is the first beyond 236 and 241 the first beyond 240. Day 242 has a koti sign, and if we look close we will find a koti also in day 238 (between the bottom tamaiti and the top part).

Moe in Aa6-17 looks like a sleepy old bird with head on its way down, and likewise a head is going down in day 243 (Aa6-25 and Gb1-13):

Aa6-20	Aa6-21	Aa6-22	Aa6-23 (439)	Aa6-24	Aa6-25	Aa6-26	Aa6-27
241		(439 + 45) / 2 = 242		243		244

The same rhythm characterizes the evolution beyond day 236 (8 * 29.5) as beyond day 240 (8 * 30).

The sign of a head hanging down alludes to rau hei, which illustrates the beginning of a rebirth 243 days later.