It can refer to:
* A timetable: showing the times of events, classes, or work shifts.
* A schedule of activities: like a daily or weekly plan.
* Opening hours: of a store, restaurant, or other business.
Examples:
* ¿Cuál es el horario de la clase de español? (What is the schedule for the Spanish class?)
* El horario de trabajo es de 9 a 5. (The work schedule is from 9 to 5.)
* El horario de la tienda es de lunes a viernes. (The store's opening hours are Monday to Friday.)