EST to MST converter

Eastern Time (EST) is UTC−5 and observes daylight saving (EDT, UTC−4, roughly March–November). It covers New York, Toronto, Miami and Atlanta.

Mountain Time (MST) is UTC−7 and observes daylight saving (MDT, UTC−6, roughly March–November). It covers Denver, Salt Lake City and Calgary.

Mountain Time is typically 2 hours behind Eastern Time, though daylight saving can shift the difference by an hour at some times of year.

Best time to call Mountain Time from Eastern Time

Office hours overlap for about 6 hours a day: 11:00 AM–5:00 PM in Eastern Time is 9:00 AM–3:00 PM in Mountain Time. Book calls inside this window and nobody is out of hours. Daylight saving can shift these times by an hour at some points in the year.