There: you need to be at the railway station in Tver no later than 19:30.
From Moscow, there is a convenient high-speed train at 17:42 from Leningradsky railway station, ticket 780 rubles. (stops Khimki, Skhodnya, Zelenograd).
Tickets without seats are sold until the train departs and their number is unlimited.
In the app, ticket sales open in 10 days, at the box office in 7-10 days.
You can buy on the spot at suburban ticket offices of the Leningrad direction, ticket machines or the Russian Railways application (in the application, not on the website).
If for some reason you can't buy in the app or it shows that there are no tickets, don't worry, you can buy a ticket before the train departs at the ticket office or ticket vending machine.
You can drive to Tver and leave your car there for the duration of the hike. Either directly to Seliger, the coordinates and parking location will be sent by a consultant in a hiking chat.
The group will be at the parking lot at about 23:00.
Return trip: from Tver to Moscow Lastochka at 18:53, arrival at 20:42 at Leningradsky railway station (stops Khimki, Skhodnya, Zelenograd), ticket 790 rubles.
Also, any trains departing after 19:00.