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
Standard Chinese Standard Chinese Standard Chinese, also known as Modern Standard Mandarin, Standard Mandarin, Modern Standard Mandarin Chinese (MSMC), or simply Mandarin, is a standard variety of Chinese that is the sole official language of China, the de facto official language of Taiwan and also one of the four official languages of Singapore. Its pronunciation is based on the Beijing dialect, its vocabulary on the Mandarin dialects, and its grammar is based on written vernacular Chinese. Like other varieties of Chinese, Standard Chinese is a tonal language with topic-prominent organization and subject–verb–object word order. It has more initial consonants but fewer vowels,