If your central controller is behind, going forward isn't a big deal. However, if it is behind its a bit trickier. This is because you will have duplicate time stamps and it gets cranky.
Since you are only five minutes behind I would suggest the following:
1. stop the router/logger
2. Wait for 6-10 minutes
3. Set the clock to the appropriate time
4. restart the router/logger
You can just change the clock however you have to go into sql and removethe duplicate keys so this way is the easiest.
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adignn - berbee