noun
estimated time of departure; ETD
Formal term used in transportation schedules, such as flights, trains, or buses.
搭乗券に出発予定時刻が記載されています。
The estimated time of departure is printed on the boarding pass.
Refers to the estimated time of arrival (ETA), the counterpart to ETD.
Compound of 出発 (departure) + 予定 (schedule/plan) + 時刻 (time).