Is there any chance to change contest schedule time, so that there a 4 different times (3am 9am 3pm 9pm) in that way each candidates from each time zone can choose which one to attend to avoid disturbing sleepting pattern?

If we had 4 different times (3am 9am 3pm 9pm) missing one or attending it would not be a big deal, but each week waking up in 2:30 am (GMT) is pain.

So, each Sunday of the month there will be schedule rotation, there will be still one contest on Sunday but at different times.

Example:
7th Nov Sunday 3am GMT
14th Nov Synday 9am GMT
21st Nov Sunday 3pm GMT
28th Nov Sunday 9pm GMT
5th Dec Sunday 3am GMT
... and so on ...

Note: Contest content never repeats, and contest is always once, only in different times of the day.