Lake - water = Akhet(flooding)
folded 24 cubits = whole duration of Akhet = 4 months
but the lake originally was at 12 cubits(half full) = 2 months
The exact date thus is between the end of II Akhet(II Akhet 30) and the start of III Akhet (III Akhet 1).
If you use this for the time of Sneferu you would have a date between August 4 and August 5.
To observe the stars the best time is midnight. This is what the sky looks like at midnight(between 4 and 5). Solar system objects disabled:
The star theta Pisces crosses the Meridian. Also the ecliptic is very close to the boundary between Pisces and Aquarius.
Edited 2 time(s). Last edit at 09-Sep-19 17:18 by Spiros.