Operations, like mining and truck traffic, are some of the top causes of air pollution. These activities release carbon monoxide, sulfur dioxide and nitrous oxide into the air, all of which contribute to development of smog and various health problems.
King of Prussia Information. Time Zone. Abbreviation / Name. EDT - Eastern Daylight Time. EST - Eastern Standard Time. UTC / GMT Offset. -4:00 hours during Eastern Daylight Time, currently in use. -5:00 hours during Eastern Standard Time.
The continental United States (the 48 contiguous states) is divided into 4 time zones: Eastern Standard Time ( EST ) which is 5 hours behind Greenwich mean Time (GMT) Central Standard Time ( CST ) which is 6 hours behind Greenwich mean Time (GMT)