Central Standard Time is 6 hours behind Coordinated Universal Time (UTC).
Central Daylight Time is 5 hours behind UTC.
In locations observing Daylight Saving Time (DST) during part of the year, Central Time is not static but switches between CDT and CST.
Where and when is Central Time observed?
- Florida - North-West parts
Bay, Calhoun, Escambia, Holmes, Jackson, Okaloosa, Santa Rosa, Walton and Washington counties and norther Gulf county
- Indiana - these few 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, Spencer
- Kansas - except these western counties
- Kentucky - Western part
Adair, Allen, Ballard, Barren, Breckinridge, Butler, Caldwell, Calloway, Carlisle, Christian, Clinton, Crittenden, Cumberland, Daviess, Edmonson, Fulton, Graves, Grayson, Green, Hansock, Hart, Henderson, Hickman, Hopkins, Livingston, Logan, Lyon, Marshall, McCracken, McLean, Metcalfe, Monroe, Muhlenberg, Ohio, Russell, Simpson, Todd, Trigg, Union, Warren and Webster counties
- Michigan - A few western counties
Dickinson, Gogebic, Iron, and Menominee
- Nebraska - Eastern parts
All except Arthur, Banner, Box Butte, Chase, Cheyenne, Dawes, Deuel, Dundy, Garden, Grant, Hooker, Keith, Kimball, Morrill, Perkins, Scotts Bluff, Sheridan, and Sioux counties and the western part of Cherry county which are on MST/MDT
- North Dakota - North and Eastern parts
counties of Barnes, Benson, Bottineau, Burke, Burleigh, Cass, Cavalier, Dickey, Divide, Eddy, Emmons, Foster, Grand Forks, Griggs, Kidder, Lamoure, Logan, McHenry, McIntosh, McLean, Mountrail, Nelson, Oliver, Pembina, Pierce, Ramsey, Ransom, Renville, Richland, Rolette, Sargent, Sheridan, Steele, Stutsman, Towner, Traill, Walsh, Ward, Wells, Williams and northern parts of McKenzie and Dunn, westernmost part of Morton and Fort Yates in Sioux
- South Dakota - Eastern parts
counties of Aurora, Beadle, Bon Homme, Brookings, Brown, Brule, Buffalo, Campbell, Charles Mix, Clark, Clay, Codington, Davison, Day, Deuel, Douglas, Edmunds, Faulk, Grant, Gregory, Hamlin, Hand, Hanson, Hughes, Hutchinson, Hyde, Jerauld, Jones, Kingsbury, Lake, Lincoln, Lyman, Marshall, McCook, McPherson, Mellette, Miner, Minnehaha, Moody, Potter, Roberts, Spink, Sanborn, Sully, Todd, Tripp, Turner, Union, Yankton, Walworth and eastern parts of Stanley
- Tennessee - Western part
counties of Bedford, Benton, Bledsoe, Cannon, Carroll, Cheatham, Chester, Clay, Coffee, Crockett, Cumberland, Davidson, Decatur, DeKalb, Dickson, Dyer, Fayette, Fentress, Franklin, Gibson, Giles, Grundy, Hardeman, Hardin, Haywood, Henderson, Henry, Hickman, Houston, Humphreys, Jackson, Lake, Lauderdale, Lawrence, Lewis, Lincoln, McNairy, Macon, Madison, Marion, Marshall, Maury, Montgomery, Moore, Obion, Overton, Perry, Pickett, Putnam, Robertson, Rutherford, Sequatchie, Shelby, Smith, Stewart, Sumner, Tipton, Trusdale, Van Buren, Warren, Wayne Weakley, White, Willamson, Wilson
- Texas - All, but a few counties in west
El Paso and Hudspeth and part of Culberson
- Ontario - most parts west of 90 West. (Parts east of 90 West is on EST/EDT)
- Saskatchewan - only Creighton and Denare Beach
- Distrito Federal
- Nuevo León
- Quintana Roo
- San Luis Potosí
CST all year round
Some locations, such as the ones below don't switch and are in CST all year long.
Canadian provinces using CST all year
Central American countries using CST all year
- Costa Rica
- El Salvador