Eastern Daylight Time (EDT) is 4 hours behind Coordinated Universal Time (UTC). This time zone is in use during Daylight Saving Time in: North America, Caribbean.
See full time zone mapWhat Is Eastern Daylight Time?
Eastern Daylight Time is the easternmost time zone in the United States. It is also used in Canada.
It covers all or parts of 23 states in the US and three provinces or territories in Canada. It is also used in the Caribbean.
Almost half of the population in the USA live in the EDT time zone. The time zone spans from northern Canada to Haiti.
In North America, Eastern Standard Time shares a border with Atlantic Daylight Time (ADT) in the east and with Central Daylight Time (CDT) in the west.
EDT or EST?
Eastern Daylight Time (EDT) is a North American time zone in use from the second Sunday in March to the first Sunday in November during Daylight Saving Time (DST). Eastern Standard Time (EST) is used during the remainder of the year.
EDT Is the Eastern Time Zone
In everyday usage, EDT is often referred to as Eastern Time (ET) or the Eastern Time Zone. This can add a bit of confusion as the term Eastern Time does not differentiate between standard time and Daylight Saving Time, so Eastern Time switches between EST and EDT in areas that use DST during part of the year.
Most North American time zones also have generic terms, including Pacific Time (PT), Mountain Time (MT), Central Time (CT), and Atlantic Time (AT).
Converting Eastern Time to Other US Time Zones
- Eastern Daylight Time (EDT) is 1 hour ahead of Central Daylight Time (CDT).
To convert EDT to CDT, you have to subtract one hour. - Eastern Daylight Time (EDT) is 2 hours ahead of Mountain Daylight Time (MSDT).
To convert EDT to MDT, you have to subtract two hours. - Eastern Daylight Time (EDT) is 3 hours ahead of Pacific Daylight Time (PDT).
To convert EDT to PDT, you have to subtract three hours.
Where and When is EDT Observed?
North America
US states using EDT in the summer and EST in the winter
-
Kentucky - eastern partscounties of Anderson, Bath, Bell, Boone, Bourbon, Boyd, Boyle, Bracken, Breathitt, Bullitt, Campbell, Carroll, Carter, Casey, Clark, Clay, Elliott, Estill, Fayette, Fleming, Floyd, Franklin, Gallatin, Garrard, Grant, Greenup, Hancock, Hansock, Hardin, Harlan, Harrison, Henry, Jackson, Jefferson, Jessamine, Johnson, Kenton, Knott, Knox, Larue, Laurel, Lawrence, Lee, Leslie, Letcher, Lewis, Lincoln, Madison, Magoffin, Marion, Martin, Mason, McCreary, Meade, Menifee, Mercer, Montgomery, Morgan, Nelson, Nicholas, Oldham, Owen, Owsley, Pendleton, Perry, Pike, Powell, Pulaski, Robertson, Rockcastle, Rowan, Scott, Shelby, Spencer, Taylor, Trimble, Washington, Wayne, Whitley, Wolfe, Woodford
-
Tennessee - eastern countiesAnderson, Blount, Bradley, Campbell, Carter, Claiborne, Cocke, Grainger, Greene, Hamblen, Hamilton, Hancock, Hawkins, Jefferson, Johnson, Knox, Loudon, McMinn, Meigs, Monroe, Morgan, Polk, Rhea, Roane, Scott, Sevier, Sullivan, Unicoi, Union, and Washington
Canadian provinces/territories using EDT in the summer and EST in the winter
-
Ontario - most parts east of 90 West and two communities west of 90 WestShebandowan, Upsala
-
Quebec - most of itexcept East of 63 West, Blanc Sablon which observe AST all year
Caribbean
Other Eastern Daylight Time Zones
Time zones can have similar names and abbreviations but have a different UTC offset:
- Eastern European Summer Time (EEST): UTC +3
- Australian Eastern Daylight Time (AEDT): UTC +11
- Eastern Greenland Summer Time (EGST): UTC -1