"Messiah" Sing-along: First Seventh-day Adventist Church, 7450 Standifer Gap Road, 3 p.m., free but offering will be taken to benefit a local nonprofit. Bring your own score and join the chorus to sing Handel's "Messiah." Dr. Lonnie McCalister will conduct; soloists will be Cynthia Johnson, Andrea Dismukes, James Frost and Tony Deaton. 605-2468.
Senior Adult Seminar: Life Care of Hixson, 5798 Hixson Home Place, 6 p.m., free session by Lori Dove, physical therapist and assistant volleyball coach at Hixson Middle School, on how to read labels on boxes, bottles and cans to become more knowledgable about what you are eating. 842-0049.
Meet 'n' Greek: The Church on Main, 1601 Rossville Ave., 4-5 p.m., open house for all Chattanooga collegians in a sorority at UTC or out-of-town; wear letter shirts; sponsored by Chattanooga Alumnae Panhellenic. ChattPanhellenic@gmail.com.