Eastern Time (New York)

Eastern Time (ET) is the timezone for the eastern seaboard of the United States and parts of eastern Canada. It is the most populous timezone in the US, encompassing major financial, political, and cultural centers. The Eastern timezone was established in 1883 when US railroads adopted standard time zones to replace the chaotic patchwork of local solar times. EST (Eastern Standard Time) is UTC-5 during winter months, while EDT (Eastern Daylight Time) shifts to UTC-4 from the second Sunday in March to the first Sunday in November. Wall Street operates on Eastern Time, making it the reference clock for US financial markets. Major broadcasters like NBC, CBS, and ABC schedule their primetime programming around Eastern Time. The timezone covers 23 US states fully or partially, as well as parts of Ontario and Quebec in Canada. It is also used by several Caribbean nations. Eastern Time is five hours behind Coordinated Universal Time (UTC) and is the basis for many business scheduling conventions across North America.