Alaska Time Zone to 03:00 LDT on the second Sunday in March and returns at 02:00 LDT to 01:00 LST on the first Sunday in November. Two time zones have been referred to as the "Alaska Time Zone": a zone based on UTC−10 that covered much of Central Alaska in the early 20th century, and a zone based on UTC−9 zone that has covered all of the state except the Aleutian Islands since 1983. The Standard Time Act of 1918 authorized the Interstate Commerce Commission to define each time zone. The United States Standard Alaska Time was designated as UTC−10. Some references prior
The Standard Hour The Standard Hour The Standard Hour, also known as The Standard Symphony Hour, was a weekly radio broadcast by the San Francisco Symphony Orchestra and the San Francisco Opera first heard in 1926. The series was carried on the NBC Pacific radio network on Sundays at 8:30 p.m. Pacific time. Also called "The Standard Symphony Hour", "The Standard Hour" was sponsored by Standard Oil of California. The series began in 1926 in San Francisco, when the San Francisco Symphony faced bankruptcy. Standard Oil of California paid the orchestra's debts and in return was given broadcast rights to that year's concert