Redmarked glyphs indicate important points from which to start counting:
 
Gb6-17 (400) Gb6-18 Gb6-19 Gb6-20 Gb6-21 Gb6-22 Gb6-23 Gb6-24
Gb6-25 Gb6-26 (409) Gb6-27 Gb6-28 Gb7-1 Gb7-2 Gb7-3 (414) Gb7-4

Tamaiti in Gb7-3 is a special case, because it is located where 14 lunar months are ending. 14 * 29.5 = 414. The 'measure' of a 'greater fortnight' has run out.

If we count from Gb6-17 we will find hanau in Ga8-18 after 10 lunar months:

70 219
Gb6-17 (400) Gb6-18 Gb6-19 Ga8-16 Ga8-17 Ga8-18 (222)
295

If we then change the point of beginning to tamaiti the day number for this hanau glyph will be less. However, we must begin the counting from Gb7-4, because tamaiti belongs to the previous 'greater fortnight':

57 219
Gb7-1 (412) Gb7-2 Gb7-3 Gb7-4 Ga8-16 Ga8-17 Ga8-18 (222)
280

Gb7-4 comes 15 glyphs later than Gb6-17 and 295 will be changed to 280. Still, it is of course possible to reach 295 days by continuing beyond Ga8-18:

57 235
Gb7-4 Gb1-6 Gb1-7 (237)
295

With Te Pei at 8 * 29.5 = 236, the measure of 8 lunar months is full. At Tama (Gb7-3) likewise a measure is full.

The other tamaiti (Ga7-11) is not at any such lunar measure, it is instead related to the sun:

57 180 53
Gb7-4 Ga7-11 (181) Ga7-12 Gb1-6 Gb1-7 (237)
240 55
295

Ika hiku in Ga7-12 indicates the full measure for the sun of spring. Counted from Gb8-30 tamaiti in Ga7-11 serves as a mark for the beginning of the 2nd half of 360 days:

178 176
Gb8-30 Ga1-1 Ga7-11 (181) Ga7-12 Gb5-5 Gb5-6 (360)
180 180

Ika hiku at Ga7-12 is number 182 (half 364) counted from Gb8-30. alternatively number 58 + 182 = 240 counted from Gb7-4.

Finally, counting from Rogo does not result in any obviously remarkable results:

63 180 53
Gb6-26 (1) Ga7-11 (181) Ga7-12 Gb1-6 (300)
244 = 8 * 30.5 56 = 2 * 28

Both the tamaiti glyphs and ika hiku in Ga7-12 are - it appears - without any connection with the real solstices. Summer solstice is not 180 days counted from Gb8-30, it comes earlier.