Hello I am from turkey. We have crowded team which want to attend this gamejam but starting time is too late for us. Could you expand the starting time. 

I'm not sure I understand, do you mean that the time of the day is too late for you? In that case, you should not worry as the jam lasts a week so you will have plenty of time to work on your game. If you're talking about the date, unfortunately that can't be changed.