That's odd.. I thought I already replied..There is no grand cross in this chart.. At least, not between any of the planets and Chiron..
However there is a tsquare involving:
Chiron+pluto
Jupiter
The moon
I must ask.. Are you CERTAIN about the birth time? That could change the position of the moon a bit..
I'll try and think how this tsquare may manifest.
EDIT: ah, I see that I originally replied to this question in the personal readings section.. I see that you said the birth time is correct. That's good.