1. The 7th hour ends at 07h or right ascension 7 * 60 = 420m, which according to my model means day number 420 / 1440 * 365¼ = 106.53 counted from the present spring equinox north of the equator. In the G text this day is probably represented by glyph number 107 (= 91 + 16):

Ga1-22 Ga1-23 (496) Ga1-24 Ga1-25 Ga1-26 (*91)
Saiph (495.5) Wezn, χ¹ Orionis,  Betelgeuze (497.3) Praja-pāti, Menkalinan, and Mahashim (498.3), γ and η Columbae, μ and χ² Orionis
Atariki
Ga1-27 (500) Ga1-28 Ga1-29 (30) Ga1-30
ν and ξ Orionis κ Aurigae
Ga2-1 (32) Ga2-2 Ga2-3 Ga2-4
Canopus, ψ1  
Ga2-5 (36) Ga2-6 Ga2-7 Ga2-8
ν Puppis, ψ3, ψ2 ψ4, ψ5 ψ6, τ Puppis, ψ7
Ga2-9 Ga2-10 Ga2-11 (42) Ga2-12 (*107)
ψ8 ψ9    

64 + 27 = 91 at Ga1-26 probably defines the end of the 1st quarter (from equinox) and by adding another half month it becomes 107. With 24h for a full cycle each right ascension hour corresponds to 365¼ / 24 = 15.2 days, but in order to put each day in parallel with a glyph it is necessary to here increase the number to 16.

So far we have listed the following stars in the 7th hour:

7th hour:

  μ Orionis 4.12 09° 36′ N 06h 00m 91.3 499.3
  χ² Orionis 4.64 20° 08′ N 06h 01m 91.5 499.5
  ν Orionis 4.42 14° 46′ N 06h 04m 92.4 500.4
  ξ Orionis 4.45 14° 13′ N 06h 09m 93.5 501.5
  κ Aurigae 4.32 29° 30′ N 06h 13m 94.6 502.6
Canopus α Carinae −0.72 52° 40′ S 06h 21m 96.6 504.6
  ψ1 Aurigae 4.92 49° 17′ N 06h 22m 96.9 504.9
  ν Puppis 3.17 43° 12′ S 06h 35m 100.2 508.1
  ψ3 Aurigae 5.34 39° 54′ N 06h 36m 100.4 508.4
  ψ2 Aurigae 4.80 42° 29′ N 06h 36m 100.5 508.5
  ψ4 Aurigae 5.04 44° 31′ N 06h 40m 101.5 509.5
  ψ5 Aurigae 5.24 43° 35′ N 06h 44m 102.4 510.4
  ψ6 Aurigae 5.22 48° 47′ N 06h 45m 102.7 510.7
  τ Puppis 2.94 50° 37′ S 06h 47m 103.2 511.2
  ψ7 Aurigae 4.99 41° 47′ N 06h 48m 103.4 511.4
  ψ8 Aurigae 6.46 38° 30′ N 06h 51m 104.2 512.2
  ψ9 Aurigae 5.85 46° 16′ N 06h 54m 104.9 512.9

Let's now extend our list of stars to include also the remaining prominent ones according to my astronomy book, it would be nice to have some more names:

Canopus α Carinae -0.72 52° 40′ S 06h 21m 96.6 504.6
Adara ε Canis Majoris 1.50 28° 54′ S 06h 57m 105.8 513.8
Alhena γ Gemini 1.93 16° 27′ N 06h 53m 104.8 512.8
Furud ζ Canis Majoris 3.02 30° 02′ S 06h 18m 95.9 503.9
Mebsuta ε Gemini 3.06 25° 11′ N 06h 41m 101.7 509.7
Mirzam β Canis Majoris 1.98 17° 56′ S 06h 20m 96.4 504.4
Sirius α Canis Majoris -1.46 16° 39′ S 06h 43m 102.2 510.2
Tejat Prior η Gemini 3.31 22° 31′ N 06h 12m 94.4 502.4
Tejat Posterior μ Gemini 2.87 22° 32′ N 06h 20m 96.4 504.4