Just discovered these new bus route guides. They are very easy to read and show the hours of operation by days of the week. They can be found at the Turista Info office on Park Calderon. You have to ask for it, I did not see any out in plain view.
By the way, the guide is free. Better hurry as you never know how long it will take to get more when they are gone.
See you on the bus................J&D