In other words, in locations observing Daylight Saving Time (DST) during part of the year, Eastern Time is not static but switches between EDT and EST.
Eastern Time UTC Offset
Eastern Standard Time is 5 hours behind Coordinated Universal Time (UTC).
Eastern Daylight Time is 4 hours behind UTC.
Where and when is Eastern Time observed?
- District of Columbia
- Florida - Southern/Eastern parts
- Indiana - all except for these north-western counties near Chicago (Lake, Porter, La Porte, Newton, Jasper, Starke) and these south-western counties in Indiana near Evansville
Gibson, Posey, Vanderburgh, Warrick, Perry
- Kentucky - eastern parts
counties 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
- Michigan - most except these western counties
- New Hampshire
- New Jersey
- New York
- North Carolina
- Rhode Island
- South Carolina
- Tennessee - eastern counties
Anderson, 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
- West Virginia
EST all year round
Some locations, such as the ones below don't switch and are in EST all year long.
Canadian provinces/territories using EST all year
- Nunavut - Southampton Island only (Coral Harbour)
Mexican states using EST all year
- Quintana Roo
Caribbean countries using EST all year
- Cayman Islands
Central American countries using EST all year