What US states do not observe Daylight Savings Time?
From http://webexhibits.org/daylightsaving/ (On page 2; click “Next.”) “Daylight Saving Time, for the U.S. and its territories, is NOT observed in Hawaii, American Samoa, Guam, Puerto Rico, the Virgin Islands, most of the Eastern Time Zone portion of the State of Indiana, and the state of Arizona (not the Navajo Indian Reservation, which _does_ observe). Navajo Nation participates in the Daylight Saving Time policy, due to its large size and location in three states.