Sunday, March 16

The Southworth Planetarium on USM’s Portland campus (96 Falmouth St.) marks the advent of St. Patrick’s Day with “Night of Eire,” an evening of programs about ancient Irish stone circles, the mystical world of Eire and the constellations the old Celts saw. Starts at 6:30 p.m. Suggested donation: $5-$7. 780-4249. usm.maine.edu/planet.