Fomalhaut	α Piscis Austrini	29º 53' S	22h 55m	348.8
Skat	δ Aquarii	16º 05' S	22h 52m	348.0
Matar	η Pegasi	29º 58' N	22h 41m	345.2
Homan	ζ Pegasi	10º 34' N	22h 39m	344.7
Sadalachbia	γ Aquarii	01º 38' N	22h 19m	339.6
Ancha	ζ Aquarii	08º 02' S	22h 14m	338.4
Alnair	α Gruis	47º 12' S	22h 05m	336.1
Sadalmelek	α Aquarii	00º 34' S	22h 03m	335.6

Deneb Algiedi	δ Capricorni	16º 21' S	21h 44m	330.8
Enif	ε Pegasi	09º 39' N	21h 42m	330.2
Azelfafage	π1 Cygni	50º 58' N	21h 40m	329.7
Nashira	γ Capricorni	16º 53' S	21h 37m	329.0
Sadalsud	β Aquarii	05º 48' S	21h 29m	326.9
Alfirk	β Cephei	70º 20' N	21h 28m	326.7
Alderamin	α Cephei	62º 22' N	21h 17m	323.9

But the list is beginning too late, I have to extend it to cover also the area from 20h:

Albali	ε Aquarii	09º 41' S	20h 45m	315.8
Gienah	ε Cygni	33º 47' N	20h 44m	315.5
Deneb Cygni	α Cygni	45º 06' N	20h 40m	314.5
Svalocin	α Delphini	15º 44' N	20h 37m	313.8
Rotanev	β Delphini	14º 25' N	20h 35m	313.3
Peacock	α Pavonis	56º 53' S	20h 21m	309.7
Sadir	γ Cygni	40º 06' N	20h 20m	309.4
Dabih	β Capricorni	14º 56' S	20h 18m	308.9
Gredi	α Capricorni	12º 42' S	20h 15m	308.2

I cannot se any obvious and immediate correlation between Gb1-14--15 and Dabih & Gredi:


*Gb1-14 (308)**	Gb1-15	Gb1-16	Gb1-17	Gb1-18	Gb1-19	*Gb1-20 (314)**

Gb1-21	Gb1-22	Gb1-23	Gb1-24	Gb1-25	*Gb1-26 (320)**	Gb2-1

However, 21 * 60 / 1440 * 365.25 = 319.6 could connect 21h with the transition from line b1 to line b2.

And similarly, 22 * 60 / 1440 * 365.25 = 334.8 could indicate the demarcation line in the sky which The Lucky One of the King has managed to pass over:

Sun		22h	*Sadalmelek - α Aquarii*

Gb2-13	Gb2-14 (270)		Gb2-15	*Gb2-16 (336)**

"... the names [Dabih and other similar ones] undoubtedly come from Al Sa'd al Dhābi, the Lucky One of the Slaughterers, the title of the 20th manzil (of which these alphas and β were the determinant point), manifestly referring to the sacrifice celebrated by the heathen Arabs at the heliacal rising of Capricorn." (Allen)