Paris Métro Line 12 (opened as Line A in 1910) is one of sixteen metro lines in Paris, France. It links Issy-les-Moulineaux in southern Paris to Front Populaire in the north. With 72 million journeys per year, Line 12 is the eleventh busiest on the Parisian Métropolitan system. It has several important stops, such as Madeleine, the 6th arrondissement of Paris, Porte de Versailles and two national railway stations, Gare Montparnasse and Gare Saint-Lazare. The service runs every day of the week, starting at 5.30 am; the last departure is at 12.39 am, or on Fridays and Saturdays, one hour later. The line uses MF 67 series trains, the network's standard since the early 1970s; they make a complete journey in 36 minutes.