Aprilis

thumb|April panel from a Roman mosaic of the months (from El Djem, [[Tunisia, first half of 3rd century AD)]]

Aprilis or mensis Aprilis (April) was the second month of the ancient Roman calendar in the classical period, following Martius (March) and preceding Maius (May). On the oldest Roman calendar that had begun with March, Aprilis had been the second of ten months in the year. April had 29 days on calendars of the Roman Republic, with a day added to the month during the reform in the mid-40s BC that produced the Julian calendar.