Question #5:
1993-JUN-10??
On that day, transiting Saturn turned retrograde (backwards) to almost perfectly oppose your natal Saturn, forming that aspect closely from parental axial, while the transiting Moon conjuct natal IC participating the difficult angle.
Also, transiting Mars was approaching MC; transiting Pluto crossed ASC.
No matter whether your parents got divorced on that day or around that time, I don't think it was a very pleasant experiences of any possible kind.
Anyway, it's almost 10 years ago...
Kai