- “Saturday Morning at the National” will feature Michael Shwedick presenting “Reptile World.” 9:30 and 11 a.m. Free; reservations suggested. Helen Hayes Gallery, National Theatre, 1321 Pennsylvania Ave. NW. thenationaldc.org/saturday-morning-at-the-national.
- A park ranger will lead a planetarium program about the season’s brightest stars, planets and constellations (for ages 5 and older). 1 p.m. Free. Rock Creek Nature Center, 5200 Glover Road NW. 202-895-6070. The program will repeat Sunday at 1 p.m.
- Children will hear a story about José Limón and then create a special piece of art. 1 to 4 p.m. Free. National Portrait Gallery, 8th and F streets NW. 202-633-1000. The program will repeat Sunday from 1 to 4 p.m.
- Georgetown’s City Kids Theater will present “The Adventures of the Extra Ordinary Super Heroes,” a new play written by Nan and Ray Ficca and directed by Ray Ficca (for ages 5 to 13). 1 and 3 p.m. Free; reservations requested. Georgetown Lutheran Church, 1556 Wisconsin Ave. NW. citykidstheater.org. The performance will repeat Sept. 24, Sept. 30 and Oct. 1 at 1 and 3 p.m.
- The House of Sweden will host a weekly storytime for children and families to experience Swedish children’s literature. 2 p.m. Free. House of Sweden, 2900 K St. NW. www.swedenabroad.com/washington.
- A park ranger will lead a planetarium program about the solar system, the Milky Way and other deep space objects (for ages 7 and older). 4 to 4:45 p.m. Free. Rock Creek Nature Center, 5200 Glover Road NW. 202-895-6070. The program will repeat Sunday at 4 p.m.
Classes and workshops
- Gayla April will present a weekly dance/exercise class. 9:30 a.m. Free; reservations required. Guy Mason Recreation Center, 3600 Calvert St. NW. 202-727-7527.
- The Mount Pleasant Library will present “Saturday Morning Yoga.” 10 a.m. Free. Mount Pleasant Library, 3160 16th St. NW. 202-671-3122.
- Volunteers from the Washington English Center will lead an “ESL Conversation Circle” for English learners who already have some knowledge of the language. 10 a.m. Free. Tenley-Friendship Library, 4450 Wisconsin Ave. NW. 202-727-1488.
- Heather Markowitz, founder of WithLoveDC, will lead a “Practice With Love” yoga class. 10:30 to 11:30 a.m. Free. National Garden Lawn Terrace, U.S. Botanic Garden, 100 Maryland Ave. SW. 202-225-8333.
- The Mayor’s Office on Asian and Pacific Islander Affairs will host a tai chi class. 10:45 to 11:45 a.m. Free. Chinatown Park, 5th Street and Massachusetts Avenue NW. 202-727-3120.
- Yoga Activist will present a class for beginners. 11 a.m. Free. Petworth Library, 4200 Kansas Ave. NW. 202-243-1188.
- In conjunction with its production of “The Arsonists,” Woolly Mammoth Theatre Company will present a workshop on “Violence and Power,” led by Collective Action for Safe Space executive director Jessica Raven. 5 to 7 p.m. Free; reservations requested. Melton Rehearsal Hall, Woolly Mammoth Theatre Company, 641 D St. NW. woollymammoth.net.
- The Folger Consort will present “An English Garden: Music From the Age of Shakespeare,” featuring popular ballads and art songs from the theater paired with lively instrumental pieces. 4 and 8 p.m. $40. Folger Theatre, Folger Shakespeare Library, 201 East Capitol St. SE. 202-544-7077. The performance will repeat Sunday at 2 p.m.
- Musician Luis Garay and members of his Latin percussion ensemble will perform. 3:30 p.m. Free. Tenley-Friendship Library, 4450 Wisconsin Ave. NW. 202-727-1488.
- The 21st Century Consort will perform music for two pianos, including John Corigliano’s “Kaleidoscope,” Sergei Rachmaninoff’s “Symphonic Dances,” Claude Debussy’s “En blanc et noir” and William Bolcom’s “The Garden of Eden.” Pre-concert talk at 4 p.m.; performance at 5 p.m. Free. McEvoy Auditorium, Smithsonian American Art Museum, 8th and G streets NW. 202-633-1000.
- A 25th-anniversary celebration of “Keyboard Conversations With Jeffrey Siegel” will feature a concert with commentary highlighting works by Leonard Bernstein, including excerpts from “West Side Story” and his solo piano arrangement of Copland’s “El Salon Mexico.” A Q&A session will follow. 6 p.m. Free. Millennium Stage, Kennedy Center. 202-467-4600.
- Jazz@Wesley will present a concert by Miguel y los Vatos. 6:30 to 8:30 p.m. $5 to $10; free for ages 12 and younger. Wesley United Methodist Church, 5312 Connecticut Ave. NW. 202-966-5144, ext. 325.
Discussions and lectures
- Author and furniture historian Oscar P. Fitzgerald will discuss “A Closer Look: American Furniture, 1650 to the Present.” 11 a.m. to 1 p.m. Free; reservations required. McEvoy Auditorium, Smithsonian American Art Museum, 8th and G streets NW. americanart.si.edu/calendar.
- Journalist, speaker, musician and author Celeste Headlee will discuss her book “We Need to Talk: How to Have Conversations That Matter” in conversation with Joshua Johnson. 1 p.m. Free. Politics and Prose, 5015 Connecticut Ave. NW. 202-364-1919.
- Composer Gisle Kverndokk and librettist Aksel-Otto Bull will join a panel of guests to discuss the creative process of bringing Ruth Maier’s story to the stage with a musical theater work based on “Ruth Maier’s Diary” by Jan Erik Vold. 12:10 and 1:30 p.m. Free. West Building Lecture Hall, National Gallery of Art, 6th Street and Constitution Avenue NW. 202-737-4215.
- The Johns Hopkins bloodless medicine and surgery team will offer an in-depth look at bloodless medicine. 2 to 4 p.m. Free; reservations required. Conference Room 2, Building A, Sibley Memorial Hospital, 5215 Loughboro Road NW. bit.ly/2icJ0Jo.
- Freelance registrar Susan Laudicina will discuss “Collections Management for Private Collectors,” featuring practical advice for keeping a collection of precious art and textiles safe and well-documented. 2 to 4 p.m. Free. George Washington University Museum and Textile Museum, 701 21st St. NW. 202-994-5200.
- Yuri Slezkine, professor of Russian history at the University of California at Berkeley, will discuss his book “The House of Government: A Saga of the Russian Revolution” in conversation with Kathleen Smith. 3:30 p.m. Free. Politics and Prose, 5015 Connecticut Ave. NW. 202-364-1919.
- David Litt will discuss his book “Thanks, Obama: My Hopey Changey White House Years.” 6 p.m. Free. Politics and Prose, 5015 Connecticut Ave. NW. 202-364-1919.
Festivals and family programs
- The U.S. Botanic Garden will celebrate the National Garden’s anniversary as a living oasis that demonstrates the great diversity of the Mid-Atlantic flora, cultivated roses and pollinator-attracting plants. The event will include hands-on activities for all ages, Rose Garden tours and more. 10 a.m. to 4 p.m. National Garden, U.S. Botanic Garden, 100 Maryland Ave. SW. 202-225-8333.
- Miller Jeanne Minor and the Friends of Peirce Mill will host “Run of the Mill,” a chance to see Washington’s only surviving gristmill in action. The day’s activities will include family workshops and craft programs. 11 a.m. to 2 p.m. Free. Peirce Mill, Tilden Street and Beach Drive NW. 202-895-6070.
- “Art All Night: Made in DC” — an overnight arts festival in six District neighborhoods with Main Street groups — will feature local artists and collectives while bringing visual and performing arts such as painting, photography, sculpture, crafts, fashion, music, dance, theater, silent discos, film and poetry to indoor and outdoor public and private spaces, including businesses. 7 p.m. to 3 a.m. Free. Various venues in the participating neighborhoods of Congress Heights, Dupont Circle, H Street NE, North Capitol, Shaw and Tenleytown. artallnightdc.com.
- The DC Anime Club will screen “Batman and Harley Quinn.” 2 to 5 p.m. Free. Tenley-Friendship Library, 4450 Wisconsin Ave. NW. dcanimeclub.org.
- “From Vault to Screen: Recent Restorations From the Academy Film Archive” will feature Tom Buckingham’s 1932 movie “Cock of the Air,” at 2 p.m.; and a program on “Aloha Wanderwell Baker: Film Adventuress,” at 4 p.m. Free. East Building Auditorium, National Gallery of Art, 4th Street and Pennsylvania Avenue NW. 202-737-4215.
- Dupont Underground will present a screening of “Eternal Summer,” followed by performances by D.C. musicians Yahuali and Troy Everett. 7 to 11 p.m. $6 to $15. Dupont Underground, 1500 19th St. NW. dupontunderground.org.
Performances and readings
- The Klunch will present “Mucho Kluncho Talent Show,” featuring performances by Christopher Henley, Carlos Bustamante, Sara Barker, Johnny Kat, Mary Suib and more. 7 to 11 p.m. $20 to $75. Logan Fringe Arts Space, Trinidad Theater, 1358 Florida Ave. NE. 866-811-4111.
- To celebrate its 20th anniversary, Story District will present “I Did It for the Story: A tribute to 20 years of storytelling,” featuring tales from 20 performers. 7:30 p.m. $15. Lincoln Theatre, 1215 U St. NW. storydistrict.org.
- The In Series will present a new English adaptation of Mozart’s “The Magic Flute,” about a prince’s quest to rescue his love from a mysterious sage. 8 p.m. $20 to $47. D.C. Scottish Rite Temple, 2800 16th St. NW. 202-204-7763. The performance will repeat Sept. 24 at 2:30 p.m., Sept. 27 at 7:30 p.m. and Oct. 1 at 2:30 p.m.
- Salvadoran poet Quique Aviles will present “Coquitrucos or El Salvador Meets Borinquen,” a multimedia performance with Puerto Rican bassist Pepe Gonzalez, Puerto Rican poet Sammy Miranda, Salvadoran percussionist Ivan Navas joining Aviles on stage for an artistic dialogue emanating from Mount Pleasant’s growth and culture. 8 p.m. $15 to $30. Dance Place, 3225 8th St. NE. 202-269-1600.
- Teatro de la Luna will present Juana Estrella from Ecuador in “Penelope” by Jorge Dávila Vázquez (in Spanish). 8 p.m. $25 to $30. Casa de la Luna, 4020 Georgia Ave. NW. 202-882-6227. The performance will repeat Sunday at 4 p.m.
- The Theater Alliance’s Word Becomes Action Festival — an exploration of the diversity of experiences and narratives of the African diaspora — will feature “Name Calling,” written and performed by Goldie Patrick. 8 p.m. $20. Anacostia Playhouse, 2020 Shannon Place SE. theateralliance.com. The performance will repeat Sunday at 8 p.m., and Patrick will lead a “Devising Political Theatre Workshop” Sunday at 4:30 p.m.
- The American Diabetes Association will present the DC Step Out Walk and Tour de Cure to raise funds for diabetes research in the Washington region. Bike rides start at 7 a.m.; 5K walk starts at 9:30 a.m. $15; advance registration required. Washington Monument grounds, 15th Street and Independence Avenue SW. diabetes.org.
- Dumbarton House will host a Museum Pop-up Shop featuring items from stores at the Heurich House Museum, President Woodrow Wilson House, President Lincoln’s Cottage and Tudor Place Historic House and Garden, as well as Dumbarton House’s own shop. 10 a.m. to 2 p.m. Free. Dumbarton House, 2715 Q St. NW. 202-337-2288.
- “Metro Mambo” will feature a live broadcast of unreleased live and studio recordings by Palladium Ballroom-era Latin music legends and a panel discussion with legendary percussionists Jose Madera and Johnny “Dandy” Rodriguez, followed by dancing to mambo and salsa classics performed live by the Sin Miedo band. 2:30 p.m. Free; reservations suggested. Dance Place, 3225 8th St. NE. 202-269-1600.
- The Salt Line and Other Half Brewing Co. will present “Oyster Wars,” showcasing the talents of some of the best chefs, breweries, and oyster farms along the Eastern Seaboard. 3 to 11 p.m. $35 to $45. The Salt Line, 79 Potomac Ave. SE. oysterwars.eventbrite.com.
- “Champagne in the Sculpture Garden” will offer a chance to hear live music by the Samuel Prather Trio while viewing two recent additions to the Kreeger Museum Sculpture Garden — “Against the Day” by Richard Deutsch and “Portals” by Sandra Muss. Proceeds will benefit the museum’s education programs. 5 to 7 p.m. $50; reservations required. Kreeger Museum, 2401 Foxhall Road NW. 202-337-3050, ext. 310.
- The Washington National Opera will host “Opera in the Outfield,” with a simulcast of Verdi’s “Aida” broadcast live from the Kennedy Center Opera House to the high-definition NatsHD scoreboard. Pre-show activities will include performances by local artists; a screening of the Warner Bros. cartoon “What’s Opera, Doc?”; a costume trunk dress-up area; and a craft table with coloring. 7 p.m.; gates open at 5 p.m. Free. Nationals Park, 1500 South Capitol St. SE. operaintheoutfield.org. In conjunction with this year’s “Opera in the Outfield” event, the Foggy Bottom West End Village has reserved 30 seats in sections 128, 129 and 130 for members and friends; to register, email firstname.lastname@example.org.
- D.C. United will play the San Jose Earthquakes. 7 p.m. $20 to $200. RFK Stadium, 2400 East Capitol St. SE. 800-745-3000.
- The Washington Capitals will play the Carolina Hurricanes in a preseason matchup. 7 p.m. $5 to $94. Capital One Arena (formerly Verizon Center), 601 F St. NW. 800-745-3000.
Tours and walks
- As part of the annual WalkingTown DC event, tour guides Jim Jones and Don Harrell will lead “Art and History Are Alive at the Cemetery,” a stroll through 300-year-old St. Paul’s Rock Creek Parish and Rock Creek Cemetery. 10 a.m. to noon; reservations required. Free. Meet at the main gate to Rock Creek Cemetery at Rock Creek Church Road and Webster Street NW. culturaltourismdc.org. Various tours throughout the city will be offered through Sunday.
- The DC Preservation League and the Historical Society of Washington, D.C., will present “Bridges of Washington by Boat,” a sightseeing tour led by Donald Beekman Myer, an architect and author of “Bridges and the City of Washington.” 3:30 to 6 p.m. $75 to $100; reservations required. Tour leaves from Washington Sightseeing Cruises at 3100 K St. NW. dchistory.org.