- 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.
- A park ranger will lead a planetarium program about “Fire and Ice: Strange Moons of the Solar System” (for ages 7 and older). 4 p.m. Free. Rock Creek Nature Center, 5200 Glover Road NW. 202-895-6070.
Classes and workshops
- The Kadampa Meditation Center will host a weekly class on meditation. 10 a.m. $6 to $12. Kadampa Meditation Center, 1787 Columbia Road NW. 202-986-2257.
- Local yoga instructors Alia Peera and Amy Mitchell will present “Sunday Serenity: Yoga in the East Park.” 10 to 11 a.m. $5 donation suggested; reservations encouraged. Dumbarton House, 2715 Q St. NW. dumbartonhouse.org. The program will continue weekly through Aug. 27.
- Arrin Sutliff, wedding and event coordinator at Wollam Gardens, will present a two-hour “Flower Arranging” workshop focusing on the fundamentals of floral preparation, concepts of color and texture, and how to forage your own materials. 11 a.m. and 2 p.m. $60 to $70; reservations required. Conservatory Classroom, U.S. Botanic Garden, 100 Maryland Ave. SW. 202-225-8333.
- A Multicultural Showcase Concert will celebrate the diversity of music in the Washington area with performances by Hindustani violinist Nistha Raj, Palestinian-American family band Foty Fusion, Caribbean steel pan player Josanne Francis and Grammy-nominated beatbox/ukulele player Christylez Bacon. 12:30 p.m. Free; monetary donations will benefit the food pantry ministry. Christ Lutheran Church, 5101 16th St. NW. 202-829-6727.
- Grace Episcopal Church will conclude its 24th annual Bach Festival with organist Lawrence Molinaro and tenor Joseph Regan performing selections from “Clavier-Übung III.” 1 p.m. $25; $10 for students. Grace Episcopal Church, 1041 Wisconsin Ave. NW. 202-333-7100.
- The DC Chamber Orchestra will present the Illudium String Quartet performing classical music. 2 p.m. Free. Tenley-Friendship Library, 4450 Wisconsin Ave. NW. 202-727-1488.
- Students of Heather Green, Wanzhen Li and Ko Sugiyama studying at the National Symphony Orchestra’s Summer Music Institute will perform works by Maurer, Debussy and Schubert. 6 p.m. Free. Millennium Stage, Kennedy Center. 202-467-4600.
Discussions and lectures
- In conjunction with the March on Washington Film Festival, the Washington National Cathedral will host a panel discussion on “The Gathering Place: Creating a Shared Religious Activism,” featuring Rabbi Jonah Dov Pesner of the Religious Action Center of Reform Judaism; the Rev. Kelly Brown Douglas of the Washington National Cathedral; Bishop Mariann Edgar Budde of the Episcopal Diocese of Washington; and Dennis Wiley, pastor of Covenant Baptist United Church of Christ. 1 p.m. Free; reservations required. Washington National Cathedral, Massachusetts and Wisconsin avenues NW. cathedral.org.
- Amitai Etzioni, professor at the Institute for Communitarian Policy Studies at George Washington University, will discuss his book “Avoiding War with China: Two Nations, One World.” 1 p.m. Free. Politics and Prose, 5015 Connecticut Ave. NW. 202-364-1919.
- Mervin Richard, chief of conservation at the National Gallery of Art, will discuss his department’s behind-the-scenes role in preserving the timeless works of art in the gallery’s collection. 2 p.m. Free. East Building Auditorium, National Gallery of Art, 4th Street and Pennsylvania Avenue NW. 202-737-4215.
- John Bicknell will discuss his book “Lincoln’s Pathfinder: John C. Fremont and the Violent Election of 1856.” 5 p.m. Free. Politics and Prose, 5015 Connecticut Ave. NW. 202-364-1919.
- The 22nd annual Made in Hong Kong Film Festival will feature “Trivisa,” featuring three tales of criminal derring-do played out against the backdrop of the 1997 British handover of Hong Kong to China, at 1 p.m.; and “Vampire Cleanup Department,” about a mild-mannered millennial who survives a vampire attack and discovers he is part of a centuries-old organization of vampire hunters, at 3:30 p.m. Free. Warner Bros. Theater, National Museum of American History, Constitution Avenue between 12th and 14th streets NW. 202-633-1000.
- “Cinéma de la révolution: America Films Eighteenth-Century France” will feature Stephen Frears’ 1988 film “Dangerous Liaisons,” featuring dark games of intrigue and mischief in the American movie adaptation of Christopher Hampton’s play. 4 p.m. Free. East Building Auditorium, National Gallery of Art, 4th Street and Pennsylvania Avenue NW. 202-737-4215.
Performances and readings
- The Joaquin Miller Poetry Series will feature readings by poets Jessica Cuello and Melissa Scholes Young, as well as an open mic segment. 3 to 5 p.m. Free. Rock Creek Nature Center, 5200 Glover Road NW. 703-820-8113.
- As part of the 2017 Capital Fringe Festival, musical duo Dr. Dour & Peach will present “Love and Other Lures,” featuring tales of monsters great and small in a unique combination of comedic songwriting, horror movie references and theatrical clowning. 2:45 and 11 p.m. $17 plus Fringe Button. Shopkeepers, 1231 Florida Ave. NE. capitalfringe.org. The performance will repeat July 22 at 5:15 p.m.
- “Sunday Kind of Love,” a monthly program, will feature readings by emerging and established poets, followed by an open mic segment. 5 to 7 p.m. $5. Langston Room, Busboys and Poets 14th & V, 2021 14th St. NW. 202-387-7638.
- Capitol Tap will present a performance by the next generation of tap musicians, dancers, historians, improvisers, technicians, teachers and performers. 7 p.m. $10 to $25. Dance Place, 3225 8th St. NE. 202-269-1600.
Walks and tours
- A park ranger will present “By Dawn’s Early Light,” about the life and legacy of Francis Scott Key in D.C. (for ages 7 and older). 11 a.m. Free. Meet at the fountain in the Georgetown Waterfront Park, Wisconsin Avenue and K Street NW. 202-895-6070.
- The D.C. Preservation League’s “Mid-Century Modern Instameet” will feature a photo walk through Southwest D.C., featuring architectural highlights such as River Park’s aluminum arches and one of I.M. Pei’s lesser-known works. 5 to 7 p.m. Free; reservations requested. Meet in front of Arena Stage, 1101 6th St. SW. dcpreservation.org.