You can over-ride this Java setting -Duser.timezone=VALUE
For example, for US East coast...
More specifically, update the Tomcat task (mainframe) adding this record. We suggest after the -Dfile.encoding= record.
For US West coast, use value "America/Los_Angeles".
For Tomcat started via other methods (Service or SH script), just look for wherever you set the JVM values such as the memory settings.