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
Mountain Standard Time (band) winner David Glasser in February 2011 in support of their second annual "Mardi-Grass" celebration at the Fox theater in Boulder, Colorado. Mountain Standard Time was originally formed as a four piece string band, composed of Adam Pause on banjo, Stan Sutton on mandolin and guitar, Curly Collins on bass, and Phillip Dyer on mandolin and guitar. At the time, all four were living in the town of Nederland, Colorado; known for its local music scene, and home to artists such as The String Cheese Incident, Yonder Mountain String Band, and Vince Herman (of Leftover Salmon and Great American Taxi fame).