A synchronizing system and method receive event log data from different monitoring systems. The event log data represents operational events of a powered system recorded by the monitoring systems and corresponding times of the operational events. The monitoring systems record the event log data at different time bases and/or sampling rates. The event log data from the monitoring systems are temporally correlated with each other by changing the time bases of the event log data to a common time base and/or by changing a visual presentation of the event log data such that the event log data are visually presented with a common time scale responsive to the sampling rates differing from each other.