Time Zone History

Indianapolis, Indiana time zone history

On standard time, clocks in Indianapolis, Indiana run 45 minutes ahead of local mean solar time. Local mean time, UTC−5:44:38, ended in 1883.

UTC−5

Standard time is UTC−5 (EDT/EST); clocks go forward to UTC−4 on the second Sunday in March and back on the first Sunday in November.

Covers: Indiana (most areas) · tz database name America/Indiana/Indianapolis

Convert a time from Indianapolis, Indiana

Summer time in 22 of 57 years since 1970

UTC−6: 1 hour behind today’s standard timeUTC−5:44:38: 45 minutes behind today’s standard timeUTC−5: today’s standard timeUTC−4: 1 hour ahead of today’s standard timeUTC−6: 1 hour behind today’sstandard timeUTC−5:44:38: 45 minutes behindtoday’s standard timeUTC−5: today’s standard timeUTC−4: 1 hour ahead of today’sstandard time

How to read this chart

Before 1970

187018901910193019501970187019101950
JanFebMarAprMayJunJulAugSepOctNovDec1970198019902000201020202028JFMAMJJASOND1970198019902000201020202028

Standard time changes

DateChangeNew standard timeClock label
Before 1970
November 18, 1883Local mean time (UTC−5:44:38) replacedUTC−6CST
April 24, 1955Standard time forward 1 hourUTC−5EST
September 29, 1957Standard time back 1 hourUTC−6CST
April 27, 1958Standard time forward 1 hourUTC−5EST

Daylight saving periods

YearsClocks go forwardClocks go backShift and labels
Before 1970
1918–1919last Sunday in March, 02:00last Sunday in October, 02:001 hour, CST to CDT
1941June 22September 281 hour, CST to CDT
1942February 9not that year1 hour, CST to CWT
1945not that yearSeptember 301 hour
1946–1954last Sunday in April, 02:00last Sunday in September, 02:001 hour, CST to CDT
1969–1970last Sunday in April, 02:00last Sunday in October, 02:001 hour, EST to EDT
Since 1970
2006April 2October 291 hour, EST to EDT
2007–2037second Sunday in March, 02:00first Sunday in November, 02:001 hour, EST to EDT

Clock changes in 2026, 2027 and 2028

The clocks go forward 1 hour (EST to EDT) on March 8, 2026, March 14, 2027 and March 12, 2028 at 02:00 and back 1 hour (EDT to EST) on November 1, 2026, November 7, 2027 and November 5, 2028 at 02:00, local time.

Also on UTC−5

Vevay, Indiana (United States), Winamac, Indiana (United States), Marengo, Indiana (United States), Vincennes, Indiana (United States), Petersburg, Indiana (United States), Louisville, Kentucky (United States), Monticello, Kentucky (United States), Detroit (United States), Toronto (Canada) and New York (United States) (nearest first; 13 more on the list of offsets).

Clocks next door since 1970

  • Vevay, Indiana (147 km): same time except 371 days in 1971 and 1972.
  • Winamac, Indiana (148 km): same time except 343 days in 2006 and 2007.
  • Marengo, Indiana (156 km): same time except 798 days in 1971–1973 and 1975.
  • Vincennes, Indiana (169 km): same time except 581 days in 2006 and 2007.
  • Petersburg, Indiana (172 km): same time except 1,970 days in 1970–1977, 2006 and 2007.
  • Knox, Indiana (174 km): usually 1 hour behind; different on 9,430 days in 1970–2026.

How it compares

Standard time has stayed at UTC−5 since 1958.