These are the glyphs in the 5th line, significantly at the top of the side. The Nose of the Lion (Al Minhar al Asad, κ Leonis) marks where the King is beginning:

Ka4-14	Ka4-15 (77)
Al Minhar al Asad (141.6), Alphard (142.3)	ω Leonis (142.6), τ¹ Hydrae (142.7), Alterf, τ² Hydrae (143.4)
'August 10 (222)	'11
Murzim 7	8

Ka4-16 (*144)	Ka5-1 (79)
ξ Leonis (143.5), A Hydrae (144.1)	Ukdah (145.4)
'August 12	'13 (225)
Murzim 9	10 (89)

Ka5-2	Ka5-3	Ka5-4	Ka5-5
κ Hydrae (145.5), Subra (145.8), ψ Leonis (146.4)	Ras Elaset Australis (146.6)	υ¹ Hydrae (148.4)	Ras Elaset Borealis (148.7)
'August 14	'15	'16	'17 (229)
Murzim 11	12	13 (92)	An Nathra 1

Ka5-6 (*150)	Ka5-7
ν Leonis (150.1)	π Leonis (150.6)
'August 18	'19
An Nathra 2	3

Ka5-8	Ka5-9
υ² Hydrae (151.8), Al Jabhah (152.4)	Regulus (152.7), λ Hydrae (153.2)
'August 20	'21 (233)
An Nathra 4 (96)	5

Ka5-10	Ka5-11	Ka5-12 (*156)	Ka5-13	Ka5-14 (92)
	Adhafera, Tania Borealis (154.7)	Algieba (155.5), Tania Australis (156.0)	μ Hydrae (157.1)
'August 22	'23	'24 (236)	'25	'26
An Nathra 6	7	8 (100)	9	10

... Regulus is α Leonis and in the picture of Hevelius located where the heart of the Lion ought to be:

It is the front part of Leo which seems to be of importance in line Ka5. Beyond Ka5-9 (Regulus) no important Leo stars arrive for several days. Instead, beyond 'August 21,  there are 5 glyphs which could indicate the loss of his head and a general decline in quality.

And at the very end of side a there is an unusual Rei with lack of lustre. 92 is its place.

"lustre¹ ... period of five years. XIV. - L. lūstrum, prop. quinquennial purification, perh. :- *loustrom, f. lavāre wash ... lustration expiatory sacrifice, etc., purification ..." (The Oxford Dictionary of English Etymology.)

The central star in the 5-glyph end phase of the front of Leo is Algieba, γ at the neck of Leo. This star rose heliacally 156 (= 12 * 13) days after 'March 21 and August 24 is Gregorian day 236 (= 8 * 29½).

80 + 12 * 13 = 236. Therefore 472 = 160 + 13 * 24.

And August 24 can be expressed as 8-24., suggesting 192 (= 8 * 24). 472 - 192 = 280 = 5 * 24 + 160.

92 is also the day number at the end of the Murzim nakshatra (ruled by Sirius). The following nakshatra An Nathra was beginning in 'August 17, day 229 in the Gregorian calendar (and 229 is the number of glyphs on side a of the G tablet).