An edifying day presents itself Saturday in "Virginia Women: Visions and Voices," an all-day symposium organized by the Virginia Women's Cultural History Project. Beginning at 9:30 a.m. at the Wolf Trap Barns, the symposium promises recitals, readings and discussions (255-1939) . . . The American Film Institute screens "The Vietnam Era on Film," a month-long film festival exploring cinematic treatment of Vietnam and American military involvements in general, from "Why Vietnam?" to "Who'll Stop the Rain," beginning May 5 in the AFI Theatre at the Kennedy Center (785-4600) . . .

Summer entertainment might involve the Navy Band in June, July and August: Mondays at 8 p.m. at the Capitol's West Terrace and Thursdays at the Sylvan Theater, on the Washington Monument grounds. Dial-the-Navy-Band recording at 433-2525 . . . Renoir's "The Boating Party" is on display at the Phillips Collection through Sunday. Don't expect to see it this summer, though -- it travels to a Renoir retrospective at the Galleries Nationales du Grand Palais in Paris after that date . . .

Adult-level workshops in children's film animation are being offered, starting April 29, at Tomorrow's World Art Center, Lansburgh Cultural Center (420 Seventh St. NW; (829-1188) . . . Tina Chancey, member of the Baroque chamber ensemble Hesperus, this month received a $5,000 Solo Recitalist grant from the National Endowment for the Arts to play the pardessus de viole, a French Baroque string instrument . . . "Eros," a group combining poetry and lyrics set to rock, blues, country, classical and electronic music, performs at d.c. space tonight at 8 with poet John Carter and band (393-0255) . . .

Central American writers Claribel Alegria and Manlio Argueta conduct a bilingual reading from their works on April 30 at 7:30 p.m., Dumbarton Methodist Church (3133 Dumbarton St. NW; 362-1718) . . . Actor Hurd Hatfield performs a biographical tribute to James McNeill Whistler, April 30 at 8 p.m. at Baird Auditorium, Natural History Museum (357-3030).