On Friday, 11 Oct 2019, I'll be in Amsterdam starting our vacation, we have a dinner reservations around the SPUI area. The local train numbers are 2, 11, and 12 and make the stops at the SPUI train stop. My question is: from the Central Station, how often does the trains depart? What are the departing time intervals? Need to judge what time I need to be at the central station to catch the train.