I booked a bus ticket from Siena to San Gimignano on "Siena Mobilita" website and it asked me to choose an effective date and time for my ticket. The options were 5 minutes apart, and surely a bus does not come every five minutes, but I'm having trouble viewing the bus schedule on their website. Google says there is a bus departing on that day at 9:35am, and I chose 9:00am as my effective start time. Does anyone know what this really means or how to know which "effective start time" to choose? Trying to book a bus ticket from San Gimignano to Florence for July 13, 2017 and want to make sure the ticket will be effective.
Alternatively, do people recommend buying a ticket at the bus station the day of instead?