Train run
Also: run date, service, run
One train on one day: a schedule plus the date it ran.
A schedule says what a train does on the days it runs. A run is one of those days actually happening, with its own delays, platform changes and cancellations.
The date of a run is the day it starts, even when it runs past midnight, so a sleeper leaving at 23:45 on Friday is still Friday’s train when it arrives on Saturday morning.
In Trainiac
Every journey you log is one run.