Hello,
The NIMHANS exam is conducted for two days for PG test and for one days for UG.This is done for the convinence of the applicants so that the best possible examination city as per there preference could be alloted to them and there is not much hassle.
Time table is also provided.I recommend you to keep visiting the official websites for main details regularly.
Hope this helps.
College Comparison based on Courses, Placement, Rank, Fee
Regular exam updates, QnA, Predictors, College Applications & E-books now on your Mobile