Babylinian constellation boundaries

I computed the Babylon conquest by Alexander the Great as having taken
place between September 7, 331 and October 7, 331. I was informed by
Jona Lendering on

http://www.livius.org/aj-al/alexande...ander_t40.html

that that conquest is usually dated 21 or 22 October 331, being
equivalent, according to Hunger 1988 vol. I p179, with the 14th of the
VII month.

The point is here that in the end of the VIth month, Venus was in Leo,
and that IMHO no more than 20 or 21 days can have elapsed between that
Venus-in-Leo observance and the conquest involved. Placing Skymap on
October 1, 331, (everything Julian) reveals that Venus was in Virgo,
according to our constellation boundaries.

Who knows something of the Babylonian boundaries?

Regards,

http://ourworld compuserve.nl/johnverbeek01/ (click Paper (Al)exander
III 3)