log files (like server.log) is not rotated at the specified period in JBoss EAP and Tomcat

Issue

• Despite the fact that the log4j properties for server.log is set for daily rotation a new server.log will only get created if a request exists for that day.  Is this expected?
• Is there a way to force JBoss and Tomcat to rotate exactly at 0:00 whether there is a logging event or not?
• I assume the default logging configuration with periodic-rotating-file-handler actually intended to rotate at midnight (24 hour period) in JBoss EAP 6.x/7.x, but my server.log file does not rotate exactly at 0:00.