While I appreciate the difficulty people are going to have, the only way we will be able to do this in multiple timeslots is if people volunteer to help.
I would also like to point out that I'm a day ahead of most of you. Running it on Saturday US time (Sunday my time) means I have to give up a shift at work. Running it Sunday US time (Monday my time) is out completely for me as I have small children that have many commitments.
We are flat never going to find a time that works for everyone. That's the disadvantage of us being spread all over the world. I'm just looking for a time that suits most of us.