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In a bar, a last call (last orders) is an announcement made shortly before the bar closes for the night, informing patrons of their last chance to buy alcoholic beverages. There are various means to make this signal, like ringing a bell, flashing the lights, or announcing orally.
Last call times are often legally mandated and vary widely globally as well as locally. Legislation's purpose include reducing late night noise in the neighborhood, traffic accidents, violence, and alcohol related health problems.