Hello,
Yes you can book slot(date and time)  for your BITSAT 2018 examination .You can book slot of BITSAT 2018 exam from 22rd March to 5th April 2018 and the BITSAT is scheduled to be conducted on 16th May to  31st May 2018.You can visit it's website for booking the slot after login.
Good luck.

Yes, you can book your slot according to your convenience. 

Slot booking will start from March 23 to April 5, 2018 and exam will be held from May 16 to May 31, 2018. 

 

To know in detail you can also refer below link

https://engineering.careers360.com/articles/bitsat

 

Good Luck!!

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