@girish6
The logic you are trying to accomplish is not possible with the existing scheduling strategies that are available to NiFi processor components?
I have no idea which processor you are talking about here, but since you mention it is looking for FlowFiles, I can only assume it is a processor with an incoming connection from another component.
What is your concern with just having it run all the time?
What about using a different cron so that it runs every 5 mins during hour 3 each day? This allows it a full hour each day to look for those incoming FlowFiles.
Thanks,
Matt