TODS-E401

Event ends before it starts

ERROR

A run event's end_time is earlier than its start_time. Equal times are fine (the spec allows zero-duration events such as a report time); for work past midnight, use hours of 24 or more rather than wrapping around.

Interpretation: the spec is silent on end<start; this treats it as an error and equal times as valid.

Spec reference: https://tods-transit.org/spec/#run_eventstxt