Effects of time zones on North American broadcasting Effects of time zones on North American broadcasting The scheduling of television programming in North America (namely the United States, Canada, and Mexico) must cope with different time zones. The United States (excluding territories) has six time zones (Hawaii–Aleutian, Alaska, Pacific, Mountain, Central and Eastern), with further variation in the observance of daylight saving time. Canada also has six time zones (Pacific, Mountain, Central, Eastern, Atlantic and Newfoundland). Mexico has four time zones (Pacific, Mountain, Central, and Eastern). This requires broadcast and pay television networks in each country to shift programs in time to show them in different regions. Canadian
Standard Air Lines rail link at El Paso, Texas, to carry passengers farther east by train. This was the first regular transcontinental rail and air passenger to and from California. Standard Air Lines began business as a three-times a week passenger and express service between Los Angeles, Phoenix and Tucson. The initial fleet consisted of two Fokker airplanes (NC7713 and NC8011) and seven OX5-powered Eaglerock airplanes. Standard carried 61 passengers during it first month of operations in December 1927. Initially, aircraft left Los Angeles on Monday, Wednesday and Friday at 10:00 AM Pacific Time (PT), arrived in Phoenix at 3:30 PM Mountain Time