I have been studying the Chao Phraya Express Boat website (chaophrayaexpressboat.com/en/…timetable).
I've figured out the routes, but I'm a bit confused about the timetable. For example, what time is the very last Orange Flag ferry for the evening, heading north from Sathorn Taksin to Pier 13 (Phra Arthit) on weekdays? (How does this work? It says in the website "Orange Flag , S3 - N30, 16.00 - 19.00". Does that mean that the last boat leaves Pier S3 at 16.00 and reaches Pier N30 at 19.00, in which case it should be at the Sathorn Taksin Pier around 16.20? Or does "16.00 - 19.00" mean that the last ferry leaves Pier S3 at 19.00 and should reach Sathorn Taksin Pier around 19.20?)