The Symantec Endpoint Protection Manager (SEPM) replication is set to run hourly, but only seems to run once at the same time everyday.
In SEPM 14, replications can be scheduled along with an interval. If the starting and ending time are the same, the replication will only run at that time regardless of the set interval.
If the intent is to run replications around the clock at an hourly interval, the Ending time should precede the Starting time to encompass the entire day. If they do not, adjust the schedule in the Replication Partner Properties accordingly to encompass the desired time range.