How Do you run/execute the Program/Job in a specific time/date in CICS?

I don't think that ASKTIME command is going to work here as this only gives you the current date and time. If you want to start the task at a particular time you can use

EXEC CICS START
TIME(HHMMSS)
END-EXEC.

This will start the CICS task at the time specified. But I have no idea about giving the dates