About 60% of Kentucky lies in the Eastern Time Zone, with the rest in the Central Time Zone, as follows:[1]

Central boundary counties
Eastern boundary counties

Counties to the north and east of this boundary are in the Eastern Time Zone, while counties to the south and west are in the Central Time Zone. 30% of the area in Eastern Time Zone is further west than areas to the south. This progression to the west is further continued into Indiana.

IANA time zone database

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In the IANA time zone database, Kentucky is covered by four time zones, columns marked " * " contain the data from the file zone.tab:

CC * Coordinates * TZ * Comments * UTC offset UTC offset DST
US +404251−0740023 America/New_York Eastern (most areas) −05:00 −04:00
US +415100−0873900 America/Chicago Central (most areas) −06:00 −05:00
US +381515−0854534 America/Kentucky/Louisville Eastern - KY (Louisville area)
Observed Central Time before July 23, 1961[2]
−05:00 −04:00
US +364947−0845057 America/Kentucky/Monticello Eastern - KY (Wayne)
Observed Central Time before October 29, 2000[3][4]
−05:00 −04:00

Notable clocks

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See also

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References

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  1. ^ 80 counties, totaling 24679.526 sq mi are in ET, while 40 counties, totaling 15473.36 sq mi are in CT, based on individual Wikipedia county articles as of 2012-05-21.
  2. ^ "Time Zone & Clock Changes 1960-1969 in Louisville, Kentucky, USA". www.timeanddate.com. Retrieved 5 July 2022.
  3. ^ "Time Zone & Clock Changes 2000-2009 in Monticello, Kentucky, USA". www.timeanddate.com. Retrieved 5 July 2022.
  4. ^ Shipley, Sarah (29 August 2000). "What a difference a time zone makes". Christian Science Monitor. Retrieved 5 July 2022.
  5. ^ "Colgate Clock". Roadside America. May 31, 2013. Retrieved August 28, 2017.
  6. ^ "10 Most Endangered: Colgate-Palmolive Plant and Clock". 10 Most Endangered Sites List. Historic Landmarks Foundation of Indiana. 2006. Archived from the original on 2006-07-15. Retrieved 2009-04-02.