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
The Standard School Broadcast of listeners. A few episodes of "The Standard School Broadcast" are available from old-time radio program collectors. In the 1970s, the Chevron Research Company released a series of recordings edited from "The Standard School Broadcast" as a public service. The LP records, with teachers guides, were available free of charge to elementary and junior high schools throughout the West, Rocky Mountain area and the Southwest. These out-of-print recordings have been sold on various websites. The Standard School Broadcast The Standard School Broadcast was a weekly educational radio program that went on the air in 1928 and promoted music appreciation for