The Underground Gallery at The Art Center will have a concert at 7 p.m. Friday. Doors will open at 6 p.m. Admission is $5.

Several area bands will be playing, including Pressin On, The Marbits, Scene Stage the World, 52 hz, Oldfear, Unraveler, and What Great Fangs.

Call 724-283-6922 or 724-991-5068.

The Art Center is at 344 S. Main St.

First Day Hikes will be conducted Jan. 1 at both Jennings Environmental Education Center and at Moraine State Park.The 2-mile hike at Jennings will be of moderate difficulty. The program is free and registration is not required. Meet at the prairie trails area parking lot in time to begin promptly at 1 p.m., dress for the weather, and take water and snacks as desired. Call 724-794-6011 for more information.The First Day Hike at Moraine will begin at 1:30 p.m. from the McDanel's Launch on the North Shore.Members of the Butler Outdoor Club will conduct the hike over moderate terrain. Dress for the weather and take water and a snack for this 2- to 3-mile hike on the North Country Trail.

HARMONY — Harmony's family-oriented Silvester New Year's Eve welcomes the New Year at 6 p.m. Dec. 31, which is midnight in Germany.Activities will include a 5K run/walk and 1-mile fun run/walk, Harmony Museum tours, a comedy film short “Dinner for One,” a pork and sauerkraut dinner, bratwursts and hot dogs served by the Harmony Volunteer Fire Co., gift basket drawings and live music at the Bottlebrush art gallery.A ball drop and fireworks will conclude the evening.For more information, call 724-452-6780 or 724-452-7341.