Ha10-9 (511)	Hb7-38 (994)	Hb12-12 (1257)	Hb12-24 (1269)
170⅓	331⅓	419	423

Ariga erua (Hb7-38) comes beyond winter solstice:

If we compare with summer solstice, we notice a parallel structure:

Ha5-17	Ha5-18	Ha5-19	Ha5-20
Ha5-21	Ha5-22	Ha5-23	Ha5-24

The Janus sign (which we can assume the twin heads are indicating) is not used between the first and second 'cycles' of the sun, only when a new year has arrived - Janus should stand inside the threshold of a new year. The hole in Hb7-38 can be interpreted as the 'door' leading from the old year to the new year. But such a 'door' leads also from the first half of the year to the second.

The distance from honu in Ha5-18 to honui in Ha5-22 is 4 glyphs, while the distance from honu in Hb7-32 to honui in Hb7-38 is 6 glyphs. Why it should be so is not clear. Maybe one reason is that the creator of the text wanted to reach 266 (in 7 * 38), a number alluding to 9 * 29.5 (266.5), Te Pou (Sirius). In ancient Egypt Sirius 'caused' the waters of the Nile to rise, thereby 'creating' a new year.