예정이었다

was scheduled to

→ 예정
phrase Rare #19,119
was scheduled to Describes something that was planned or expected to happen in the future from a past point of view; it does not necessarily mean it happened.
KO: 우리는 오늘 아침에 출발할 예정이었다.
EN: We were scheduled to leave this morning.

사실 화물 작업은 수요일 이면 끝날 예정 이었다.

The cargo work was actually supposed to be finished by Wednesday.

우리는 새벽이 지난 뒤 도착할 예정 이었다.

We were expected to arrive after dawn.