Today, 4/30/15, according to the Philadelphia Courts Website:

The FJD was informed today that on Thursday, April 30, 2015 at 4:30pm there will be a “Philadelphia is Baltimore” rally in the vicinity of 15th and Market Street. In an abundance of caution and for the purpose of crowd control, traffic congestion and possible reassignment of law enforcement, the Administrative Governing Board has authorized the 3:30pm dismissal of all court employees. As in the past, all critical services are expected to remain operational during normal business hours.