1. The typical or established hours of work or business operation, usually 9 AM to 5 PM or 8 AM to 6 PM
I work during conventional hours at the office.
Trabalho durante horário convencional no escritório.
2. Regular business hours as opposed to flexible, extended, or 24-hour schedules
The bank operates on conventional hours, Monday through Friday.
O banco funciona em horário convencional, de segunda a sexta-feira.