‘American Impressionism’ Through Sept. 16, at the Phillips Collection, 1600 21st Street NW, Washington, D.C. Museum Hours: Tuesday through Saturday 10 a.m. – 5 p.m.; Thursday 10 a.m. – 8:30 p.m.; Sunday Noon – 7 p.m. 202-387-2151, or see www.phillipscollection.org.