Yo,
I would like to share with you with my idea about siege dates.
Every sieges are setup on sunday.
Why not spread them between saturday and sunday and make sieges every week.
For example:
Week 18/20/22/24 Sunday - Schuttgart
Week 18/20/22/24 Saturday - Aden
Week 19/21/23/25 Sunday - Goddard
Week 19/21/23/25 Saturday - Rune
etc.
In this case there will be more fun in weekends and sieges would be more insteresting if you spread them like that.
Cheers