Catoosa County Democratic Party: OSA Inc., 7638 Nashville St., Ringgold, Ga., 9 a.m., visitors welcome for breakfast meeting and grand opening of Catoosa County Democratic headquarters. 770-826-8644.
Special Olympics: McCallie School, 10 a.m.-2 p.m., Area 4 track and field meet.
Chattanooga Clarinet Choir: First Cumberland Presbyterian Church, 1505 North Moore Road, 5 p.m., free. Program will feature the Schumann Konzertstuck in F major for four horns with guest soloists Gordon James, Chelle Graham, Tiffany Feltner and Richard Williams. 706-270-4184.
Chattanooga Music Club Concert: First Cumberland Presbyterian Church, 1505 North Moore Road, 2:30 p.m., free and open to the public. Winners of CMC scholarships perform: Joshua Coleman, Emily Oing, Monica Cook, Kelsey Stansell, Brian Mu, Alyssa Barenski, Holly Kimsey and Savannah Miller.
German Requiem Concert: Tennessee Wesleyan College, Townsend Auditorium, Athens, Tenn., 4 p.m., $10 adults, $5 students and senior adults, free to TWC faculty, staff and students. TWC Department of Fine Arts and Athens Area Community Chorus combine to perform Brahms' Requiem. 423-252-1123.
Native Plant Hike: Greenway Farm in Hixson, 5051 Gann Store Road, meet at canoe/kayak barn on grounds, 2 p.m., join herbalist Holli Richey for a hike to identify local plants and how to use them. No registration necessary. 643-6888.
Outdoor Market: Jewish Cultural Center, 5461 North Terrace, noon-3 p.m. Jewish Federation hosts a "shuk," Israeli-style market. Shop or buy a booth for $10 to sell items; tables sold on first-come, first-served basis. 493-0270, ext. 10.
Walker County Historical Society: The Marsh House, 308 North Main Street, LaFayette, Ga., 2:30 p.m., free. Professor Robert Jones of Kennesaw, Ga., speaks on "Andrews Raiders and the Great Locomotive Chase," and LaFayette's connection to that event. 706-764-2801
Opera Workshop: Lee University, Vest Building, Cleveland, Tenn., 3 p.m., free and open to the public, scenes presented by university's Opera Theatre class.
Lynne Gylani Day: Tennessee Wesleyan College, Athens, Tenn., noon-5:30 p.m., free. Campus birthday celebration honoring professor Gylani with silent auction, T-shirt tie-dying and other activities to raise money for her medical expenses and a scholarship in her name. 423-746-5205.
Organ Concert: St. Paul's Episcopal Church, 305 W. Seventh St., 7:30 p.m., $10 adults, $5 students, concert by Massimo Nosettii, organist of Turin Cathedral in Italy. Reception follows. 266-8195.
Greater Cleveland Concert Band: Bradley Central High School's Fine Arts Building, 1000 South Lee Highway, Cleveland, Tenn., 7 p.m., free program by community concert band. The program will open with presentation of colors by Civil War reenactors during national anthem. Dr. Jim Burns will narrate Civil War stories of Bradley County during a show of Civil War photographs.
Humanities Lecture: Lee University, Humanities Building, Cleveland, Tenn., 4 p.m., free. Author James K.A. Smith speaks on "Educating the Imagination: From Information to Formation." 614-8137.
Plant Swap: Outdoor Chattanooga, 200 River St., 7-8 p.m., free, bring plants to swap for butterfly gardens, plants should be labeled. 785-4056.
Mammogram Screenings: Bradley County Health Department, 201 Dooley St., Cleveland, Tenn., 9 a.m.-4 p.m., for women ages 40 and older with or without insurance. Those with insurance should bring card. All patients need photo ID and doctor's name. To schedule appointment: 728-7020, ext. 0.
Gospel Singing Benefit: Ringgold Depot, 155 Depot St., Ringgold, Ga., 7 p.m., donations accepted to benefit cancer patient. Performers are Jeff Hullender Family, Gene Lowery and Pipeline, Ken Hicks and Testimony.
"Year of the Youth" Rally: East Lake Courts, center courtyard, 2600 Fourth Ave., 1-3 p.m. free. Hamilton County Democratic Party holds voter registration. Chattanooga State and labor union representatives on hand to discuss opportunities. 322-4721.