Any day of the week you can ride this train between Ankara, Kayseri, Sivas and Malatya, but after Malatya the route divides and the train goes to different cities on different days of the week.
So if you board the train in Ankara on
Tuesday or Sunday morning, it will
be named the Vangölü Ekspresi bound for Elazığ and perhaps Tatvan,
but if you board on Monday, Wednesday, Thursday, Friday or
Saturday morning, it will
be the Güney Kurtalan Ekspresi,
bound for Diyarbakir and
Ankara-Tatvan Tuesday & Sunday
The Vangölü Ekspresi departs Ankara at 11:15 am on Tuesday and Sunday hauling reserved and unreserved
compartment cars, a couchette
car, and a sleeping
||City walls, Diyarbakır,
Turkey. Note the pedestrians (in white circle).
It stops at Kayseri, Sivas, Malatya and Elazığ, and traditionally continues to Muş and reaches Tatvan about 24.5 hours after leaving Ankara.
Departures from Tatvan—or Elazığ—are on Tuesday and Thursday at 07:00 am, with arrival in Ankara the next morning at 08:00 am—if the train is on time.
Ankara-Kurtalan All Other Days
The Güney Kurtalan Ekspresi departs Ankara at 11:15 am every day except Tuesday and Sunday, taking nearly 24 hours to reach Kurtalan, east of Diyarbakır and Batman.
Departures from Kurtalan are at 08:20 am on Monday, Wednesday, Friday, Saturday and Sunday, with arrival in Ankara the next day around 08:00 am.
Please read this
safety notice about sleeping
—by Tom Brosnahan