Re:End of an American tradition: Amtrak kills the traditiona...
by distances on Sunday September 22, 2019 @09:27AM
(#21041256)
Last I was checking was for October tickets in May. Also, according to https://faq.trainline.eu/article/220-train-tickets-booking-h... it would be six months.
That said, currently they seem to reach only to mid-December so I don't really know.
You can only book train tickets three months in advance in Germany.