One whole day without planning just get wait without management. Everybody will just ask you to explain and nothing will happen so technical or specific. Just introduce yourself & keep talking. Nothing matters for what you say.

There are 3 rounds of interview. And if you are on their IN list, they might take 4. I had 4 but then still didn't get selected. Don't know why?? 1st round of Aptitude test, 2nd round with HR and 3rd / 4th with Hiring Manager