Dear Rana,
First of all i would like to tell you there will be 3 shift in a one day or night, i.e. A,B&C.
Shift timings depends as per your team lead or your manager. Actually they have the authority to create shift roster and as per their schedule timings.
Shift A means - First shift i.e. Morning shift, Timings for morning shifts starts from 6.00AM or 7.00 to till 2 or 3.00PM.
Shift B means - Second Shift i.e. Afternoon shift, Timings for noon shifts starts from 2.00PM or 3.00 to till 10 or 11.00PM
Shift C means - Third Shift i.e. Night shift, Timings for night shifts starts from 10.00 or 11.00PM to till morning 6.00 or 7.00AM.
So after C shift, you will be having again A shift i.e. morning shift.
Actually it depends on your manager to schedule timings.
All the best.