[logback-user] Time based rolling policy

Hi, I am referring to http://logback.qos.ch/manual/appenders.html#TimeBasedRollingPolicy. Below is the log4j.properties. log4j.rootLogger=INFO, R log4j.appender.R=org.apache.log4j.DailyRollingFileAppender log4j.appender.R.File=${catalina.home}/logs/catalina.out log4j.appender.R.DatePattern='.'yyyy-MM-dd log4j.appender.R.layout=org.apache.log4j.PatternLayout Basically if i set log4j.appender.R.DatePattern='.'yyyy-MM-dd in log4j.properties It rolls over at midnight. is there a way to roll over at say 12:00 Noon afternoon I think its possible using TimeBasedRollingPolicy but not sure how to use it. Please help me understand with examples Thanks and Regards Kaushal