Historically distinct IANA time zone
America/Indiana/Indianapolis
Local time now
EDT · current offset
- Countries
- United States of America
- GPS reference
- 39.77° N, 86.16° W
- Data source
- IANA northamerica
- Rule groups
- US
United States of AmericaEastern - IN (most areas)
Geographic context
Where this clock belongs
The map marks the IANA reference location and associated country, not a time-zone boundary.
GPS reference: 39.77° N, 86.16° W. Associated countries: US.
The Wikipedia link provides additional context; it is not evidence for a historical claim. Transition data comes from the IANA source file.
Notes from the time database
The story behind the clock
These source notes describe a period or rule. They do not, by themselves, establish a causal claim for a particular clock change.
War
Peace
Original IANA source file: northamerica.
A shared present
Same clock today, different past
These nearby zones follow the same current annual pattern, yet retain their own historical record.
- America/Indiana/VevayUnited States of America · 147 km from the reference location · Same annual clock since 1973
- America/Indiana/WinamacUnited States of America · 148 km from the reference location · Same annual clock since 2008
- America/Indiana/MarengoUnited States of America · 156 km from the reference location · Same annual clock since 1976
Civil-time record
Recorded changes over time
From 1883 to 2027 · 79 recorded transitions
Recurring daylight-saving changes are grouped separately when JavaScript is available.
Notable changes
One-off changes and transitions outside the recurring seasonal rhythm.
- -06:00 · CSTStandard time applies
- -05:00 · CDTDaylight saving time begins
- -06:00 · CSTStandard time applies
- -05:00 · CDTDaylight saving time begins
- -06:00 · CSTStandard time applies
- -05:00 · CDTDaylight saving time begins
Browse every recorded transition
| Local time after transition | Offset after | Abbreviation | Rule |
|---|---|---|---|
| 1883-11-18 12:00 | -06:00 | CST | Standard time |
| 1918-03-31 03:00 | -05:00 | CDT | Daylight saving time |
| 1918-10-27 01:00 | -06:00 | CST | Standard time |
| 1919-03-30 03:00 | -05:00 | CDT | Daylight saving time |
| 1919-10-26 01:00 | -06:00 | CST | Standard time |
| 1941-06-22 03:00 | -05:00 | CDT | Daylight saving time |
| 1941-09-28 01:00 | -06:00 | CST | Standard time |
| 1942-02-09 03:00 | -05:00 | CWT | Daylight saving time |
| 1945-08-14 18:00 | -05:00 | CPT | Daylight saving time |
| 1945-09-30 01:00 | -06:00 | CST | Standard time |
| 1946-04-28 03:00 | -05:00 | CDT | Daylight saving time |
| 1946-09-29 01:00 | -06:00 | CST | Standard time |
| 1947-04-27 03:00 | -05:00 | CDT | Daylight saving time |
| 1947-09-28 01:00 | -06:00 | CST | Standard time |
| 1948-04-25 03:00 | -05:00 | CDT | Daylight saving time |
| 1948-09-26 01:00 | -06:00 | CST | Standard time |
| 1949-04-24 03:00 | -05:00 | CDT | Daylight saving time |
| 1949-09-25 01:00 | -06:00 | CST | Standard time |
| 1950-04-30 03:00 | -05:00 | CDT | Daylight saving time |
| 1950-09-24 01:00 | -06:00 | CST | Standard time |
| 1951-04-29 03:00 | -05:00 | CDT | Daylight saving time |
| 1951-09-30 01:00 | -06:00 | CST | Standard time |
| 1952-04-27 03:00 | -05:00 | CDT | Daylight saving time |
| 1952-09-28 01:00 | -06:00 | CST | Standard time |
| 1953-04-26 03:00 | -05:00 | CDT | Daylight saving time |
| 1953-09-27 01:00 | -06:00 | CST | Standard time |
| 1954-04-25 03:00 | -05:00 | CDT | Daylight saving time |
| 1954-09-26 01:00 | -06:00 | CST | Standard time |
| 1955-04-24 03:00 | -05:00 | EST | Standard time |
| 1957-09-29 01:00 | -06:00 | CST | Standard time |
| 1958-04-27 03:00 | -05:00 | EST | Standard time |
| 1969-04-27 03:00 | -04:00 | EDT | Daylight saving time |
| 1969-10-26 01:00 | -05:00 | EST | Standard time |
| 1970-04-26 03:00 | -04:00 | EDT | Daylight saving time |
| 1970-10-25 01:00 | -05:00 | EST | Standard time |
| 2006-04-02 03:00 | -04:00 | EDT | Daylight saving time |
| 2006-10-29 01:00 | -05:00 | EST | Standard time |
| 2007-03-11 03:00 | -04:00 | EDT | Daylight saving time |
| 2007-11-04 01:00 | -05:00 | EST | Standard time |
| 2008-03-09 03:00 | -04:00 | EDT | Daylight saving time |
| 2008-11-02 01:00 | -05:00 | EST | Standard time |
| 2009-03-08 03:00 | -04:00 | EDT | Daylight saving time |
| 2009-11-01 01:00 | -05:00 | EST | Standard time |
| 2010-03-14 03:00 | -04:00 | EDT | Daylight saving time |
| 2010-11-07 01:00 | -05:00 | EST | Standard time |
| 2011-03-13 03:00 | -04:00 | EDT | Daylight saving time |
| 2011-11-06 01:00 | -05:00 | EST | Standard time |
| 2012-03-11 03:00 | -04:00 | EDT | Daylight saving time |
| 2012-11-04 01:00 | -05:00 | EST | Standard time |
| 2013-03-10 03:00 | -04:00 | EDT | Daylight saving time |
| 2013-11-03 01:00 | -05:00 | EST | Standard time |
| 2014-03-09 03:00 | -04:00 | EDT | Daylight saving time |
| 2014-11-02 01:00 | -05:00 | EST | Standard time |
| 2015-03-08 03:00 | -04:00 | EDT | Daylight saving time |
| 2015-11-01 01:00 | -05:00 | EST | Standard time |
| 2016-03-13 03:00 | -04:00 | EDT | Daylight saving time |
| 2016-11-06 01:00 | -05:00 | EST | Standard time |
| 2017-03-12 03:00 | -04:00 | EDT | Daylight saving time |
| 2017-11-05 01:00 | -05:00 | EST | Standard time |
| 2018-03-11 03:00 | -04:00 | EDT | Daylight saving time |
| 2018-11-04 01:00 | -05:00 | EST | Standard time |
| 2019-03-10 03:00 | -04:00 | EDT | Daylight saving time |
| 2019-11-03 01:00 | -05:00 | EST | Standard time |
| 2020-03-08 03:00 | -04:00 | EDT | Daylight saving time |
| 2020-11-01 01:00 | -05:00 | EST | Standard time |
| 2021-03-14 03:00 | -04:00 | EDT | Daylight saving time |
| 2021-11-07 01:00 | -05:00 | EST | Standard time |
| 2022-03-13 03:00 | -04:00 | EDT | Daylight saving time |
| 2022-11-06 01:00 | -05:00 | EST | Standard time |
| 2023-03-12 03:00 | -04:00 | EDT | Daylight saving time |
| 2023-11-05 01:00 | -05:00 | EST | Standard time |
| 2024-03-10 03:00 | -04:00 | EDT | Daylight saving time |
| 2024-11-03 01:00 | -05:00 | EST | Standard time |
| 2025-03-09 03:00 | -04:00 | EDT | Daylight saving time |
| 2025-11-02 01:00 | -05:00 | EST | Standard time |
| 2026-03-08 03:00 | -04:00 | EDT | Daylight saving time |
| 2026-11-01 01:00 | -05:00 | EST | Standard time |
| 2027-03-14 03:00 | -04:00 | EDT | Daylight saving time |
| 2027-11-07 01:00 | -05:00 | EST | Standard time |