Depends on where its at. Some have drive-thrus open till like 12 or 2. Some close at like 11. They shouldn't be closed now though since it's only 5:50 pm.
i havnt been in a while usually when im in vacation somewhere in the states or something.. there isnt any here in sherbrooke quebec.. closest one is aorund montreal those volcano tacos were good with the spiciest sauce.