The OP mentions that we do not know how much time passes in game when talking about other saying Squall and Rinoa's relationship grew too fast. My comment on this is that in FFIV The After, the moon phase changes every thirty minutes of game play. That would make it seem like every hour is actually two months! But another thing to keep in mind is that the moon changes when you stay at an inn. So I would say that every half hour of gameplay is about a day in their world.