This is more of a bug with it than improving them...
When you put them on alternating times, if it gets to the server turn off time it resets the time again... So if it restarts at 3, and there is meant to be a siege at 3, it will say "Warjoin now blah", then restart, and then the siege wont start for another hour...
Also, it has 12 and 24 hours as the time once a week or so... yet the server doesnt have a 24 hour, it has 23:59, and then goes to 00:00, so u miss another...
Just thought i'd point it out