City of Tucson issued the following announcement on Jan. 13
The Sun Link streetcar will again offer late-night service until 2 a.m. on Thursday, Friday, and Saturday nights. The extended hours begin this week and run through May 16.
The new schedule reflects increases in ridership that coincide with the University of Arizona's spring semester. Hours of operation Monday through Wednesday (7 a.m.-10 p.m.) and Sunday (8 a.m.-8 p.m.) will not change.
Streetcar riders can purchase a 1-Day, 3-Day, or 30-Day SunGO ticket, or an Annual Pass.
Original source can be found here.