From the county website: The public hearing schedule of the Planning Commission for 2012 is posted here for the convenience of the Planning Commissioners, staff and general public. The meetings are usually held on Mondays, with possible carry-over meetings on Wednesdays, and generally begin at 7:00 p.m. The dates may change due to schedule conflicts. Call 703-228-3525 for most recent updates. The meeting agendas, minutes, and recommendation letters are listed on the 2012 documents. The County Board schedule has also been included.
These meetings generally run long into the evening.