does az change daylight savings time
LIANE HANSEN, host: Americans set their clocks forward last night, except for two states which don't observe Daylight Saving Time. Why one of them, Arizona, doesn't is a mystery to NPR's Ted Robbins, who's based in Tucson. TED ROBBINS: It's no mystery how Arizona avoided Daylight Saving Time or why. Back in 1966, Congress adopted the Uniform Time Act, which established, well, uniform daylight saving across the country. In April, 1967, Arizona went on Daylight Saving Time with the rest of the Mountain Time zone.