noun
fixed time; regular time; scheduled time
Refers to a predetermined or regular point in time, such as a meeting time, departure time, or scheduled hour.
会議は定時に始まります。
The meeting starts at the scheduled time.
バスは定時に出発した。
The bus departed on time.
noun
Used for a predetermined or regular interval, such as a fixed term or scheduled duration. Often seen in compound terms like 定時制 (part-time/fixed-time school system).
この講座は定時制で開講されている。
This course is offered on a fixed-time schedule.