There is a cPanel plugin- ‘cronconfig’ for Dedicated Servers at RepriseHosting that can be installed to change the time of when UPCP and cPanel backups run:
After logging into your WHM, Click on "Manage Plugins":-
Install "cronconfig":
![cronconfi1](http://thesysadminblog.com/wp-content/uploads/2013/07/cronconfig1.jpg)
When the installation process get completed successfully, you just need to set the cron times in WHM -> Plugins -> "Configure cPanel Cron Times":
![cronconfi2](http://thesysadminblog.com/wp-content/uploads/2013/07/cronconfig2.jpg)