Original sentence: February 4, 1980-September 18, 2009: 12:30-1:30pm (11:30am-12:30pm Central).September 21, 2009-Present: 3:00-4:00pm (2:00-3:00pm Central)
Edited sentence: February 4,1980-Present 12:30-1:30pm (11:30am-12:30pm Central)