Denver's west-central geographic location in the Mountain Time Zone (UTC −7) also benefits the telecommunications industry by allowing communication with both North American coasts, South America, Europe, and Asia in the same business day. Denver's location on the 105th meridian west at over 1 mile in elevation also enables it to be the largest city in the U.S. to offer a 'one-bounce' real-time satellite uplink to six continents in the same business day. Qwest Communications, EchoStar, Starz-Encore, and Comcast are just a few of the telecommunications companies with operations in the Denver area. These and other high-tech companies had a boom in Denver in the mid to late 1990s, but the technology bust in the new millennium caused Denver to lose many of those technology jobs. Recently the Denver area has started making a comeback, with the October 2005 unemployment at 4.7% the lowest since September 2001. Denver government and industry leaders are attempting to diversify the Denver economy so that it is less susceptible to boom and bust cycles.