Historically distinct IANA time zone
America/Jamaica
- Countries
- Jamaica
- GPS reference
- 17.97° N, 76.79° W
- Data source
- IANA northamerica
- Aliases
- Jamaica
- Rule groups
- US
JamaicaGeographic context
Where this clock belongs
The map marks the IANA reference location and associated country, not a time-zone boundary.
GPS reference: 17.97° N, 76.79° W. Associated countries: JM.
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.
Cayman Islands · 506 km from the reference location · Same annual clock since 1984
Panama · 1044 km from the reference location · Same annual clock since 1984
Mexico · 1101 km from the reference location · Same annual clock since 2016Civil-time record
Recorded changes over time
From 1890 to 1983 · 22 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.
- -05:07 · KMTStandard time applies
- -05:00 · ESTStandard time applies
- -04:00 · EDTDaylight saving time begins
- -05:00 · ESTStandard time applies
- -04:00 · EDTDaylight saving time begins
- -05:00 · ESTStandard time applies
Browse every recorded transition
| Local time after transition | Offset after | Abbreviation | Rule |
|---|---|---|---|
| 1890-01-01 00:00 | -05:07 | KMT | Standard time |
| 1912-02-01 00:07 | -05:00 | EST | Standard time |
| 1974-01-06 03:00 | -04:00 | EDT | Daylight saving time |
| 1974-10-27 01:00 | -05:00 | EST | Standard time |
| 1975-02-23 03:00 | -04:00 | EDT | Daylight saving time |
| 1975-10-26 01:00 | -05:00 | EST | Standard time |
| 1976-04-25 03:00 | -04:00 | EDT | Daylight saving time |
| 1976-10-31 01:00 | -05:00 | EST | Standard time |
| 1977-04-24 03:00 | -04:00 | EDT | Daylight saving time |
| 1977-10-30 01:00 | -05:00 | EST | Standard time |
| 1978-04-30 03:00 | -04:00 | EDT | Daylight saving time |
| 1978-10-29 01:00 | -05:00 | EST | Standard time |
| 1979-04-29 03:00 | -04:00 | EDT | Daylight saving time |
| 1979-10-28 01:00 | -05:00 | EST | Standard time |
| 1980-04-27 03:00 | -04:00 | EDT | Daylight saving time |
| 1980-10-26 01:00 | -05:00 | EST | Standard time |
| 1981-04-26 03:00 | -04:00 | EDT | Daylight saving time |
| 1981-10-25 01:00 | -05:00 | EST | Standard time |
| 1982-04-25 03:00 | -04:00 | EDT | Daylight saving time |
| 1982-10-31 01:00 | -05:00 | EST | Standard time |
| 1983-04-24 03:00 | -04:00 | EDT | Daylight saving time |
| 1983-10-30 01:00 | -05:00 | EST | Standard time |