time zones in the individual states
United States of America

Directions for finding times manually.

The times given below are no more accurate than the time and time zone setting of your computer.

Show times in:    

State Add to UTC Daylight Saving time Time
Now
−6 −5
Alaska, see map link to map showing Alaskan time zones
—east of line −9 -8
—west of line −10 no
−7 no, but it is observed in the Navajo Nation. See note 1, below.
−6 −5
−8 −7
−7 −6
−5 −4
−5 −4
−5 −4
−5 −4
—panhandle, west of the Appalachicola River −6 −5
−5 −4
−9 no
Idaho, see map link to pop-up map showing time zones in Idaho
—east of line −7 −6
—west of line −8 −7
−6 −5
Indiana, see map link to map showing time zones in Indiana
—east of line (most of state) −5 −4
—west of line (greater Chicago and counties near Evansville, IN) −6 −5
—greater Cincinnati and counties near Louisville, KY −5 −4
−6 −5
Kansas, see map link to map showing time zones in Kansas
—east of line −6 −5
—west of line −7 −6
Kentucky, see map link to pop-up map showing time zones in Kentucky
—east of line −5 −4
—west of line −6 −5
−6 −5
−5 −4
−5 −4
−5 −4
Michigan link to pop-up map showing time zones in Michigan −5 −4
−6 −5
−6 −5
−6 −5
−7 −6
Nebraska, see map link to pop-up map showing time zones in Nebraska  
—east of line −6 −5
—west of line −7 −6
−8 −7
−5 −4
−5 −4
−7 −6
−5 −4
−5 −4
North Dakota, see map link to pop-up map showing time zones in North Dakota
—east of line −6 −5
—west of line −7 −6
−5 −4
−6 −5
Oregon, see map link to pop-up map showing time zones in Oregon
—east of line −7 −6
—west of line −8 −7
−5 −4
−5 −4
−5 −4
South Dakota, see map link to pop-up map showing time zones in South Dakota
—east of line −6 −5
—west of line −7 −6
Tennessee link to pop-up map showing time zones in Tennessee
—east of line −5 −4
—west of line −6 −5
Texas, see map link to pop-up map showing time zones in Texas
—east of line −6 −5
—west of line −7 −6
−7 −6
−5 −4
−5 −4
−8 −7
−5 −4
−6 −5
−7 −6

1. History of daylight saving in Arizona: www.azlibrary.gov/links/daylight.cfm 

History of U.S. time zones

Allen railroad action 18 November 1883.  Act of Congress March 1918.

Ian R. Bartky.
The Adoption of Standard Time.
Technology and Culture, volume 30, number 1 (January 1989).

Contains a multitude of citations.

Ian R. Bartky and Elisabeth Harrison.
Standard and Daylight Saving Time.
Scientific American, volume 240, pages 46-53 (May 1979).

Code of Federal Regulations, Title 49, Part 71.  Available on the Web at www.access.gpo.gov/nara/cfr/waisidx_99/49cfr71_99.html

Office of the Secretary. U.S. Dep't of Transportation.
Standard Time in the United States. A History of Standard and Daylight Saving Time in the United States and an Analysis of the Related Laws.
Washington: U. S. Gov't Printing Office, 1970.

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