The EST and EDT Time Zone
New York City operates on Eastern Standard Time (EST, UTC-5) during the winter. In the summer, it switches to Eastern Daylight Time (EDT, UTC-4). This time zone regulates much of the East Coast of the United States and serves as the temporal anchor for much of American commerce.
Wall Street Time
The pace of New York City dictates the global economy. The opening and closing hours of the New York Stock Exchange (NYSE) and NASDAQ—from 9:30 to 16:00, NY local time—are the most internationally monitored time intervals by investors, hedge funds, and media across the globe.
Impact on Streaming and Television
Ever wondered why American TV shows are advertised at "8/7c"? New York time is the official prime time that dictates when live events happen, while the "c" (Central) zone broadcasts it simultaneously an hour earlier on local clocks.
Useful Tools
Calculate your offsets for the stock market open using our Compare Time utility.