EM.log entries has different date formats.

Document ID : KB000072867
Last Modified Date : 15/03/2018
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   The EM.log is just a redirection of standard out & standard error when the EM is started with EM_HOME/bin/EMCtrl.sh.
    Its size is not controlled by any of the log4j properties in the EM properties file so the em.log will grow unlimited

  Why are the Date and Time format different as shown below?

2/16/18 09:21:41.266 AM EST [INFO] [main] [Manager.AppMap] Subscribed consumer of type TTProcessor to all registered generators of the event type TransactionTraceEvent.

Feb 16, 2018 9:21:41 AM org.springframework.web.context.ContextLoader initWebApplicationContext
INFO: Root WebApplicationContext: initialization completed in 2476 ms
  CA APM 10.5.2

  This is by design.

  The 2/16/18 line is the Normal Introscope log Message.
  The Feb 16 message is a service message .
  The service message entries will be logged on EM.log, not Introscope log