Hawaii–Aleutian Time Zone Hawaii–Aleutian Time Zone The Hawaii–Aleutian Time Zone observes Hawaii–Aleutian Standard Time (HST), by subtracting ten hours from Coordinated Universal Time (). The clock time in this zone is based on the mean solar time of the 150th meridian west of the Greenwich Observatory. The zone takes its name from the two areas it includes: Hawaii and the portion of Alaska's Aleutian Islands west of 169° 30′ W longitude. During daylight saving time, the Alaskan portion observes Hawaii–Aleutian Daylight Time (HDT, ), while Hawaii stays on standard time. From 1900 until 1947, GMT−10:30 was used as standard time in Hawaii. French
The Standard Hour were from the Metropolitan Opera, but a number came directly from Europe. In 1952, NBC Radio received a Peabody Award for the contributions of The Standard Symphony: First, outstanding once-a-week symphonic broadcasts over 11 western states, since October 24, 1926, through which Standard Oil of California achieved a priceless public service; secondly, a radio series of highly effective educational features for school children; and, latterly, a schedule of brilliant television presentations over Pacific Coast and inter-mountain facilities, known as "The Standard Hour", which also maintained the highest levels of production excellence. The Standard Hour The Standard Hour, also known as