Hi, the train from Havana to Santiago is called the Tren Francès (French Train)
The most updated info available online concerning train schedule is on the following website. http://www.seat61.com/Cuba.htm#.V9K9OfkrLDc
If you are not used to reading train schedules then it can be confusing a bit. But if you read the page you should be able to figure it out.
But, the most important part of taking the train in Havana is actually going to the train station and speaking with the agent and booking your ticket. You cannot get your ticket online of book electronically. It’s a person to person thing. And during that interaction the agent will tell you when to arrive at the station. Delays can arise or even cancellations so it is important to go to the station ahead of time in order to confirm things..
Note: as stated on the website….
- Havana Estación Central is closed for a major renovation from June 2015 until summer 2018.
During this period most trains are using the nearby La Coubre station instead, although those to Cienfuegos & Pinar del Rio are using Havana’s 19 de Noviembre (Tulipan) station. Just to confuse you, Le Coubre may be referred to in timetables as Central station, so stay alert!
I know that this response does not fully answer your question. In all likelihood, you already knew this information, since it is available online. I know that you know the train runs every 3 days, and you were specifically asking which days it runs, so you could plan your trip. I will call the station later today and try to get you the exact info, but I cannot guarantee that I will be able to get through to an agent over the phone.
