270
Hb5-20 (865)	Hb5-21	Hb5-22		Hb10-13	Hb10-14	Hb10-15 (1140)
289			90	380

The shorter distance from one to the other is a quarter (91 days). The longer distance is 432 - 91 = 341 = 11 * 31.

The symmetrical arrangement at the bottom of Hb10-13 could refer to a solstice, where the forces of night and day weigh even. If Hb5-20 is at the end (only day number 290 is remaining) of old sun's journey, then Hb10-13 could be at the end of winter solstice (380 = 365 + 15).

Looking again at bottom left in Hb5-20 we can identify a short 'cut mark'. Maro in Hb5-21 probably means 'finished', and likewise the number group 5-22 (the cycle of 'fire' is completed) in the following glyph.

If we count with 13 months à 29.5 nights, we can locate the end of the year to night number 13 * 29.5 = 383.5, and in the center of day 383 there is a niu:

Hb10-16	Hb10-17	Hb10-18	Hb10-19	Hb10-20	Hb10-21
381			382
Hb10-22	Hb10-23	Hb10-24	Hb10-25	Hb10-26	Hb10-27
383			384

In Hb10-22 the numbers should refer to how the sun's (10) cycle (22) is 'fully grown (tagata) and in front is a haati (going away) sign. The miserable manu rere birds in Hb10-19 and Hb10-21 could depict the last remnants of the 2nd part of the year (they are two and their beaks refer to the moon). The moon is the 'year-builder', and in day 384 it is time for that.