美国本土有4个时区
1. 北美东部时间, Eastern Standard Time,UTC-5
比北京时间慢13个小时, 夏令时慢12个小时.
Connecticut,Delaware,Georgia,Maine,Maryland,
Massachusetts,Michigan,New Hampshire,New Jersey,
New York,North,Carolina,Ohio,Pennsylvania,
Rhode Island,South Carolina,Vermont,Virginia,
West Virginia
2. 北美中部时间,Central Time Zone(North America),UTC-6
比北京时间慢14个小时,夏令时慢13个小时
Arkansas,Illinois,Iowa,Louisiana,Minnesota,Missouri,
Mississippi,Wisconsin
3. 北美山地时间,Mountain Time Zone, UTC-7
比北京时间慢15个小时, 夏令时慢14个小时.
Arizona,(always on MST - no daylight saving time except in Navajo reservation),New Mexico,Wyoming,
Utah,Colorado,Montana,Idaho
4.北美太平洋时间,Pacific Time Zone,UTC-8
比北京时间慢16个小时, 夏令时慢15个小时.
California, Washington, Oregon
***
Alaska UTC-9
Hawaii UTC-10
Puerto Rico and the U.S. Virgin Islands. UTC-4
American Samoa UTC-11
Guam and the Northern Mariana Islands UTC+10
参考资料:http://en.wikipedia.org/wiki/Time_in_the_United_States