abbreviation for Eastern Standard Time: the time on the eastern coast of the United States and Canada: The flight left Toronto at 22:55 EST. (Definition of est. from the Cambridge Business English Dictionary © Cambridge University Press) What is the pronunciation of -est, est., EST? 3 days ago · Time zone: Eastern Standard Time (EST) UTC -5 now same time as New York Eastern Standard Time is the same as the time in New York when New York is on standard time, and 1 hour behind the time in New York when New York is on daylight saving time. Eastern Standard Time does not change between summer time and winter time. B7jXM.