Comments - kimurōku

how will day and night cycle going to be. So in SAO, a whole day of SAO is 24 hours(12 Hours Day and 12 hours of night) where a full day in ALO is 12 hours(so there are 6 Hours Day and 6 hours of night) (I believe also that GGO is 12 hours, but are not quite sure). So what will it be on this SAO, 24 hours or 12 hours or something completely different?
(sorry for my english)