Do tickets have an expiration date?

Validity of train tickets

Validity of train tickets are listed below.

・Basic one way ticket: valid for one day only
・Basic round-trip ticket: valid for 2 days
・Multiple-trip tickets (set of 5 or 11 tickets): valid for 3 months

The starting date is written on the ticket.
For the tickets listed above, one ticket is good for one trip per person only.