That'll be xntpd... probably
If so, check your system time, check /etc/inet/ntp.conf to get one of your time servers.
Check the time on that server.
If your time server is wrong, fix that and your error should go away
If your local machine has the wrong time, and it's a bigger difference than 7200 ms, it won't automatically correct it.
Run ntpdate <server> to bring your server up whatever time the timeserver says it should be (even if it's a huge jump). your ntpd will continue to keep it in sync.
Been through any daylight savings time changes?