As of 2014, trick-or-treating usually happens between 5:30 p.m. and 9 p.m. in different parts of Pennsylvania. Timings and duration vary from area to area. Some cities or towns have trick-or-treating between 5:30 p.m. and 7:30 p.m., while others have it between 6 p.m. and 8 p.m.
Trick-or-treating is a Halloween tradition wherein children dress up in costumes and go from house to house asking for treats such as candy. The tradition has been in practice in the United States since the 1920s. Oct. 31 is the scheduled date for trick-or-treating, but many municipalities change the date for convenience. Many news websites, such as FOX 43, publish the date and time for trick-or-treating in different municipalities every year.