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2. Allen:

"Cor Caroli culminates on the 20th of May."

This statement makes it possible for us to repeat part of the complex route we have taken in the 13th hour:

  Allen's dates of culmination Dates of heliacal rising  
Menkar December 21 355

126

May 5

229
Alcyone December 31 365

137

May 17

228
Alnilam January 25 365 + 25 = 390

165

June 14

225
Gienah May 10 365 + 130 = 495 266 September 23 229
Cor Caroli May 20 365 + 140 = 505 276 October 3 229

196.3 days from March 21 means 196.3 + 80 = 276 days from January 1.

Ga5-19 (130) Ga5-20 Ga5-21 (*196) Ga5-22 Ga5-23
Mimosa (193.9)   Alioth (195.8), Minelauva (196.1), Cor Caroli (196.3)   δ Muscae (197.5)
13h = 197.8

Counting 505 - 276 = 229 can be said to measure the distance from heliacal rising and noon culmination to midnight culmination.

196 days from March 21 is 80 + 196 = 276 days from January 1, viz. October 3:

March 21 80
31 90
April 30 120
May 31 151
June 13 164
21 172
30 181
July 31 212
August 31 243
September 16 259 = 172 + 87
22 265 = 172 + 93
30 273
Oktober 31 304
November 30 334
December 21 355
31 365
Ga5-19 (130) Ga5-20 Ga5-21 (*196) Ga5-22 Ga5-23
Mimosa (193.9)   Alioth (195.8), Minelauva (196.1), Cor Caroli (196.3)   δ Muscae (197.5)
October 1 2 3 (276) 4 13h = 197.8

By adding 144 to the glyph number (132) at Cor Caroli we will reach the day number according to our calendar.

Mimosa, the last star in Crux, is rising heliacally 2 days earlier than Cor Caroli, which presumably can be interpreted as a sign that 'life' (light) is returning - it is 'dawn' south of the equator.

The First Star of the Southern Fly (μ) arrives with spring equinox and 19 days later its last star (δ) marks where the 13th hour is ending.

Ga5-3 (114) Ga5-4 (**87) Ga5-5 (*180)
 ζ Crateris (178.0), λ Muscae (178.1) μ Muscae (178.8), 93 Leonis (179.0), Denebola (179.3) Alaraph (179.6), Phekda, β Hydrae (180.3)
September 16 (259)