Saturday 10 a.m.-Noon: Yoga classes taught by Paul. St. Mark’s Episcopal Church, Third and A streets SE. First class, free; $70, 8 classes with 12 weeks; $50, 5 classes within 8 weeks; $70, one month of unlimited classes. 202-546-4964.
Saturday 7:30 p.m.: Puccini one-act operas: “Il tabarro,” and “Suor Angelica,” semi-staged by the Riverbend Opera Company, in Italian with English subtitles. Holy Rosary Church, 595 Third St. NW. $25; students, $15. 202-638-0165.
Saturday 7:30 p.m.: Auction night and wine tasting to benefit the synagogue’s programs, silent and live auctions with autographed sports memorabilia, weekend getaway packages and more, and wines available for tasting and purchase. Etz Hayim, 2920 Arlington Blvd. $20; $30 per couple. 703-979-4466.
Sunday 10 a.m.: Gene Robinson, former Episcopal bishop, diocese of New Hampshire, and author or “God Believes in Love: Straight Talk About Gay Marriage,” preaches, part of the church’s Lenten series, a “pub lunch” follows at 12:30 and includes an open discussion with the bishop. St. Mark’s Episcopal Church, Third and A streets SE. Free-will offering. 202-202-546-4964.
Sunday 10 a.m.: Dr. James Billington, Librarian of Congress since 1987, discusses the Library of Congress and the nation’s future. St. John’s Episcopal Church, Lafayette Square, 1525 H St. NW. Free. 202-347-8766 or www.stjohns-dc.org.
Sunday 10:10 a.m.: Environmental reconciliation discussion: Yale University lecturer and research scholar Mary Evelyn Tucker discusses the natural place people of faith have in the conversation and activity that works towards a holistic approach to the subject. Washington National Cathedral, Front Nave, Wisconsin and Massachusetts avenues NW. Free. 202-537-6200 or www.nationalcathedral.org.
Sunday 2 p.m.: Eagle Scout Court of Honor to confer the Boy Scouts of America’s highest honor on Kyle M. Kampsen, David M. Morgan and Michael H. Thayer, members of Troop 789, Dunkirk. Jesus the Good Shepherd Roman Catholic Church, 1555 W. Mt. Harmony Rd., Owings. Free. 410-257-3810.
Sunday 3 p.m.: “Ending Gun Violence,” an interfaith conversationon how to move toward a culture of non-violence, all are welcome. Unitarian Universalist Congregation of Rockville, 100 Welsh Park Dr., Rockville. Free. 301-762-7667 or 301-980-0517 or www.uucr.org.
Sunday 3 p.m.: First Baptist Church celebrates the Administrative Ministry Annual Day with Rev. Milton Lemon, Community Baptist Church, Baltimore; program includes dynamic preaching and singing God’s words. First Baptist Church, 5018 Lakeland Rd., College Park. Free-will offering. 301-474-3995.
Sunday 4 p.m.: Schola Cantorum leads the singing of solemn Gregorian Vespers in Latin with Renaissance and later motets. St Matthew’s Cathedral, 1725 Rhode Island Ave. NW. Free-will offering. 202-347-3215 or www.stmatthewscathedral.org.