HST - Hawaii Standard Time
YST - Alaska Standard/Daylight Time
PST - Pacific Standard/Daylight Time
California, Nevada, Oregon, Washington
MST - Mountain Standard/Daylight Time
Arizona, Colorado, Idaho, Montana, New Mexico, Utah, Wyoming
CST - Central Standard/Daylight Time
Arkansas, Illinois, Iowa, Kansas, Louisiana, Minnesota, Mississippi, Missouri,
Nebraska, North Dakota, Oklahoma, South Dakota, Texas, Wisconsin
EST - Eastern Standard/Daylight Time
Alabama, Connecticut, Delaware, District of Columbia, Florida, Georgia,
Indiana, Kentucky, Maine, Maryland, Massachussetts, Michigan,
New Hampshire, New Jersey, New York, North Carolina, Ohio, Pennsylvania,
Rhode Island, South Carolina, Tennessee, Vermont, Virginia, West Virginia
AST - Atlantic Standard/Daylight Time
UTC - Universal Time
GMT - Greenwich Mean Time/British Summer Time