Las Vegas is timeless, there are no clocks; just look around. But if you really need to know, Las Vegas, Nevada is actually part of the U.S. Pacific Standard Time Zone (PST). If you live on the east coast and are part of the Eastern Standard Time Zone (EST), like New York, Las Vegas will be three hours behind you. In other words, if it’s noon in New York, it’s 9:00 in the morning in Las Vegas. If you live in the Central Standard Time Zone (CST), like Kansas City, Las Vegas will be two hours behind. And finally for those in Mountain Standard Time (MST) like Colorado, Las Vegas will be one hour behind.