I want baby plan my period is start 5dec.30days is cycle period. plz tell me my ovulation day

If monthly cycle is normal, ovulation takes place in between 10-16th day ...
U can use ovulation kit to know. ..
Watch Ur body changes during ovulation period.

The Ovulation Cycle: Understanding The Basics

Please tell me fix date

Fix date cannot be decided. Each women cycles differ. So use an ovulation calculator kit to check for favourable dates and proceed