At system level directory the time of the stat_agent.log as well the server.log is correct BUT if the files are opened the timestamps in the logs are different. From where is taken the timestamp in the stat_agent.log as well server.log ?
For Example:
$ date
Fri Apr 17 12:02:03 CDT 2015
But the log files itself shows CST timestamp as below but the contents in it are showing PST timings.
$ pwd
/apps/oracle/source/product/CLSTADEV/STATDEV/stat_log
$ ls -ltr stat_agent.log
-rw-r--r-- 1 statappl dba 432452 Apr 17 11:53 stat_agent.log
$ view stat_agent.log
2015-04-17 09:53:22,019 DEBUG ...
2015-04-17 09:53:24,024 DEBUG ...
In above lines it should show [ 11:53 ] time stamp instead of [ 9:53 ] which is showing PST timings.