OFB-8

Night is a relative concept; I'll have morning when others still have evening, so this point needs to be discussed further, at least with yourself... and let us know the time. Since 2 nights are given, I hope one time slot will be mine, and the other will be the opponent's.
How long should we wait for the opponent? And how long should they play? Because if they appear for 30 minutes, it's as if they were there...

I discussed it with myself; night starts at 21-22 Moscow time... yes, what does it mean, "appeared for 30 minutes"? If players cannot agree on a common time, they MUST play during the night, starting from 21-22 Moscow time, until one wins, or they can save the game (by mutual agreement), but they MUST specifically agree on the time to finish playing, and if they still can't find a common time, the time to finish playing is again the night of the following Saturday-Sunday.
Of course, we can't foresee all cases, but the organizer has ICQ and is almost always online (if not, write in the official forum, and I'll read and answer) - write there. ;