North American time zones:

EST – Eastern Standard Time

Time zone offset: UTC - 5 hours

Note that most places observe daylight saving time/summer time during summer, and are therefore using EDT instead in the summer. See below for details.

Time zone abbreviations: EST, HNE

Email time zone indicator: -0500

An email sent from someone in the EST time zone will have the time zone listed as "-0500" in the headers of the email. (However, "-0500" does not have to be in EST, as other time zones could have the same UTC offset).

Where and when is EST observed?

EST is used during winter in these US states (EDT during summer)

• Connecticut
• Delaware
• District of Columbia
• Florida - Southern/Eastern parts
  except Bay, Calhoun, Escambia, Holmes, Jackson, Okaloosa, Santa Rosa, Walton and Washington counties and norther Gulf county - look in CST/CDT
• Georgia
• 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
• Maine
• Maryland
• Massachusetts
• Michigan - most except these western counties
  Dickinson, Gogebic, Iron, and Menominee - which are on CST/CDT
• New Hampshire
• New Jersey
• New York
• North Carolina
• Ohio
• Pennsylvania
• 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
• Vermont
• Virginia
• West Virginia

EST is used during winter only in these Canadian provinces (EDT during summer)

• Nunavut - most of it
  except Kugluktuk, Cambridge Bay - CST/CDT and Southampton Island (Coral Harbor) EST all year
• Ontario - most parts east of 90 West and two communities west of 90 West
  Shebandowan, Upsala
  The rest use CST/CDT or only CST
• Quebec - most of it
  except East of 63 West, Blanc Sablon which observe AST all year

EST is used all year

• Nunavut - Southampton Island only (Coral Harbour)

EST was used all year

• Until 2005, most of Indiana did not observe DST, but from 2006 Indiana is observing DST.

Example locations in EST

• New York - during winter
• Coral Harbour - all year

Other time zones in North America

• NST - Newfoundland Standard Time
• NDT - Newfoundland Daylight Time
• AST - Atlantic Standard Time
• ADT - Atlantic Daylight Time
• EDT - Eastern Daylight Time
• CST - Central Standard Time
• CDT - Central Daylight Time
• MST - Mountain Standard Time
• MDT - Mountain Daylight Time
• PST - Pacific Standard Time
• PDT - Pacific Daylight Time
• AKST - Alaska Standard Time
• AKDT - Alaska Daylight Time
• HAST - Hawaii-Aleutian Standard Time
• HADT - Hawaii-Aleutian Daylight Time

Time zones in other regions

• Australia
• Europe
• Military

Related links

• Time zone abbreviations world-wide
• The World Clock - Time Zones - current time around the world
• The World Clock - Time Zone Converter - Convert between time zones
• World Clock - North America - current time in North America