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When time is written or spoken of in formal situations, the 24-hour clock is used. This includes bus and train schedules and announcements on radio and television. In conversation, the 12-hour clock is used. Therefore, when consulting a bus schedule, one will see the 24-hour clock; however, the clerk selling the ticket may refer to the departure time using the 12-hour clock.

Socially, Serbs have a relaxed sense of time. One does not have to be absolutely punctual in a social situation; however, it would be considered rude to be more than a half hour late. Punctuality is expected for business appointments.
Banks and businesses open from approximately 8:00 a.m. to 4:00 or 5:00 p.m. Monday through Friday. Stores open at 10:00 a.m. and close at 8:00 p.m. Monday through Friday and are open until 5:00 p.m. on Saturdays. Some clothing stores are open from 10:00 to 3:00 on Sundays.