Hi Holger,

Various attempts have been made to fit a date to the scene on the Dendera Zodiac, hence making it a horoscope. However, none have been accepted and the presently accepted theory is that the position of the planets is in line with their hypsomata, or places of exaltation. I would refer you to pp185-187 of the following paper:

Lull, Jose, and Juan Antonio Belmonte. "The constellations of ancient Egypt." Search of cosmic order: Selected essays on Egyptian archaeoastronomy (2009): 157-161.

I haven't seen any analysis of the Temple of Esna, so highlighting here the arguments that would need to be overcome to claim the zodiac referenced is in fact a horoscope.

Regards,
Brendan