How long does it take for a court to make a decision on an appeal?

I am appealing an administrative decision, and everything was going along smoothly, like i knew the deadlines for filing, and everything was taking place within those deadlines which were between 30 and 50 days, now both parties have filed their briefs, and I made a motion for oral argument, but its been a solid month since i made that motion, and that motion was made around 4 weeks after the oppositions brief was filed, and i have heard nothing from the court. whats the typical time frame once the briefs have been filed?