I haven’t read through the entire topic and I am sure I don’t have all the information on this topic to make a clear statement here. However, I want to address certain points we all should keep in mind when approaching those kind of events:
Being an administrator is like being the referee in...
Ok let’s do weekend then, however, 18 GMT is too late for me as a starting time. Could you do 16 GMT on Sunday?
Other option would be to play it at your evening times. What is the latest starting time to would play?