Hi I am also from pune. As per my knowledge goes u can book for satday since on that day prometric centers are open.
If it is possible for u pls check out at the centre which is on karve road. I give u fone number of that centre 020 5411388 I think this will help u out.
else u can contact me at
srakesh_22@yahoo.com R u planning to appear for it?? I am also planning I have voucher.
all the best