At the 20th school, both are closed at all times. They put a trash can by the door and sleep. Even if they work during the day, I've never seen a tanker. You always refuel yourself.
Then 92, then 95, then 92 there are no norms, and they close for one hour in the morning, they can close at any time and say that accounting is now underway. There is no certainty that they are always open.