1 to 5 p.m. — Music Hackathon at UNT’s Innovation Greenhouse, in Room 119 at Sycamore Hall, 307 S. Ave. B at Sycamore Street. Event includes lectures and live music for designers, developers, programmers, industry experts and musicians. Registration is required. Cost is $45 per person, $25 for UNT students. E-mail firstname.lastname@example.org or call 940-369-5203.
2 to 6 p.m. — “Hooked on Classics Car, Truck and Cycle Show” at Little Elm Park, 704 W. Eldorado Parkway. Registration costs $10 per vehicle and will be from 1:30 to 4 p.m. Admission is free.
Denton Celtic Dancers meets from 5 to 7 p.m. at the Center for the Visual Arts, 400 E. Hickory St. Beginners’ class starts at 6 p.m. Call 940-321-0012 or visit www.dentoncelticdancers.org.
American Legion Post 71 Mission With Christ Ministry offers breakfast at 9 a.m. followed by a worship service at 10 a.m. at 2501 Spencer Road. Visit http://txlegionpost71.org.
Grupo 18 de Marzo Alcoholicos Anonimos meets from 7 to 8:30 p.m. at 100 W. Oak St. Call 940-231-9759.
Heroin Anonymous Denton meets at 11 a.m. at Solutions of North Texas’ Wilshire Hall, 2216 N. Bolivar St. Visit www.sontx.org or www.soberdorm.org, or call 940-898-6202.
Marijuana Anonymous 12-step recovery program meets at 8 p.m. at Big Mike’s Coffee Shop, 1306 W. Hickory St.
Shalom Today group of Alcoholics Anonymous meets at 9 a.m., 11 a.m., 6 p.m. and 8 p.m. for discussion at 311 S. Locust St. Call 940-383-8252.
Show Me group of Alcoholics Anonymous meets at 9 a.m., 11 a.m. and 8 p.m. at 1622 W. University Drive, Suite 104. Call 940-566-9989.
7 to 8 p.m. — Romance in the Stacks Book Club at North Branch Library, 3020 N. Locust St. Free. Call 940-349-8796 or e-mail email@example.com.
8 p.m. — UNT faculty and guest artist recital with Eugene Osadchy on cello, Alexander Kerr and Nathan Olson on violin, Susan Dubois on viola and Anastasia Markina on piano, in Voertman Hall at the Music Building, at Avenue C and Chestnut Street. Free. Call 940-565-2791 or visit www.music.unt.edu.
7 a.m. — Denton County Farmers Market at Sycamore Street and Carroll Boulevard. Visit www.dentonfarmersmarket.com.
9:30 a.m. — Mother Goose Time at South Branch Library, 3228 Teasley Lane. Stories and activities for infants (birth to 18 months) and their caregivers. Free. Call 940-349-8752.
9:30 a.m. — Toddler Time at North Branch Library, 3020 N. Locust St. Free. Call 940-349-8752.
9:30 to 10:30 a.m. — Aquatic therapy seminar at the Denton Natatorium, 2700 Long Road. Learn the benefits of aquatic therapy for medical conditions such as arthritis, fibromyalgia, sprains and more. Taught by Dan Proctor, a physical therapist from Denton Sports and Physical Therapy, and Claralynn Barnes, an AEA certified water instructor. Receive a $5 coupon for a water exercise pass. To register, call 940-349-8800. For aquatic therapy information, call 940-566-5714.
10:30 a.m. — Toddler Time at South Branch Library, 3228 Teasley Lane. Free. Call 940-349-8752.