Hello Hari,
The timings in the college is according to your time table.
You can find your class and course time table on the official website of your college.
The time your classes will start is the time you need to be in the class.
That can be from 8:40 in morning or classes can also start from 10 o clock.
It all depends on your time table.
I hope this helps.
All the best for the future!!