scheduled date; expected date
General term for a planned or anticipated date for an event, appointment, or deadline.
The scheduled date for the meeting is next Friday.
due date; expected delivery date
Abbreviation of 出産予定日, specifically referring to the expected date of childbirth.
See also: 出産予定日
The expected completion date for the construction has not been decided yet.
The due date is early next month.
The baby hasn't been born even though the due date has passed.
Deadline or time limit, often for tasks or submissions, not necessarily a scheduled calendar date.
Compound of 予定 (schedule, plan) and 日 (day). The childbirth sense is a shortening of 出産予定日.