The contiguous US has 4 standard time zones. However, adding the time zones of 2 uninhabited US territories, Howland Island and Baker Island, brings the total count to 11 time zones. The UTC Time (shown directly below) is the standard time zone upon which all other worldwide time zones are based. There are 9 time zones by law in the USA and its dependencies. Mozilla Firefox, still display it as GMT.
Some sources still refer to it as UTC/GMT and some web browsers, e.g. Each time zone is shown in a simplified form - HawaiiAleutian Standard Time (HAST), Alaska Standard Time. The worldwide standard for coordinated universal time, formerly known as GMT (Greenwich Mean Time), is now abbreviated as UTC (Coordinated Universal Time). United States time zone flat design concept map. Important (current time) Exceptions: Parts of Florida, Idaho, Indiana, Kansas, Kentucky, Michigan, Nebraska, North Dakota, Oregon, South Dakota, Tennessee and Texas are in two time zones. In the winter Arizona is on Mountain Standard Time (MST).Īlaska (AK) 90% of Alaska is (1 hour) behind the Pacific Time Zone, while the far reaches of the Aleutian Islands use Hawaii-Aleutian time. While the growing season is short, you can extend it by using cold frames or using.
With minimum average temperatures between -20 and -10 degrees F, this zone experiences a moderately cold winter. In summer, local time in Arizona is the same as Pacific Daylight Time (PDT). Plant hardiness Zone 5 includes the southern coastal region of Alaska, the North Central United States and portions of New England. In each geographic region within a time zone, people use the same time. Each section observes a uniform standard time to keep track of the day and night cycle and also for legal, social and commercial purposes. Across the United States of America, Daylight Savings Time is now in effect.ĭaylight Saving Time is not observed in Hawaii, and by most of Arizona. A time zone is one of 24 spherical lunes with equal width-each assigned with one of the 24 hours. innovation and industrial competitiveness by advancing measurement science, standards, and technology in.
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