Finally some more bus connections to and from Santa Catalina:

From Soná to Santa Catalina:
5.30am, 8.40am, 11.20am, 1.35pm, 2.40pm, 4.45pm

From Santa Catalina to Soná:

6.15am, 7.00am, 8.00am, 10.20am, 1.15pm, 3.30pm