Hi Sunshine,
I know this is an old old topic but i was fascinated by the documentary, extremely interesting for an archaeoastronomer, so had to thank you for posting it!
I only go back to the start of the Julian Calendar on 1st January 0045 BC, before that is difficult, i'm not sure that the Moon's orbit is true to ages, which can effect spin of the Earth.....i'm out in no man's land if i go back to 28th May 0585 BC, at 18:32 PM with an adjusted Julian Calendar, what i'm doing now is dubious, i'm aware of Delta T, so take the picture below, being 28th May 0585 BC as dubious!!!.
Wea