No, there isn't. catalina.out is simply capturing everything that's written to sysout and syserr. This is achieved by a simple redirect of those two streams when the JVM's launched in the catalina.sh bash script.
You can, of course, ensure that any messages written by your application have the desired timestamps by using an appropriately configured logging framework. If you configure the logging framework to write to the console, the message will be redirected into catalina.out. Alternatively, you could configure the logging framework to write to a file of your choice.
Andy Wilkinson
SpringSource