Hi all What I can see there is no way to roll the file on a specific time. E.g. every day at 17:00 As we require this I had a closer look on how logback decides to roll. I found the ch.qos.logback.core.rolling.helper.RollingCalendar is responsible to define when the next roll should happen. I extended it so that one can define the time rather then 0:00 if you roll daily. Now my problem is that there is no way to set my extended RollingCalander on the TimeBasedFileNameAndTriggeringPolicyBase as it is created inside the start method. Overriding the start of TimeBasedFileNameAndTriggeringPolicyBase and do the same without calling the super method works only if me override is in the same package which is not a nice thing. The problem would be easy solved if you would add a setter for the RollingCalander to the TimeBasedFileNameAndTriggeringPolicyBase and then change the line rc = new RollingCalendar(); to if(rc==null){ rc = new RollingCalendar(); } Clearly I could just go ahead and change that by myself but I thought maybe someone else want's this as well and it would be nice not to keep a separate code base. Let me know what you think and if you want an example of my specific time rolling calendar. Cheers Andy