To check a facility's schedule and the type of operations allowed on weekends, go to the "Network of establishments" page on the BT website. 

There you can search for the agency you are interested in by city, street or even by name 😉

Here's what you can find out:

➤⠀address of units;

➤⠀facilities offered;

➤⠀work schedule;

➤⠀phone numbers;

➤⠀standard operating hours;

➤⠀ weekend operations available.