Peru time zone history
Standard time has stayed at UTC−5 since 1908, the longest run of the 20 zones in South America with no change of standard time since 1970. Daylight saving time was used in 4 years since 1970, last in 1994; under the current rules the clocks no longer change.
UTC−5
Standard time is UTC−5 all year under the current rules.
Summer time in 4 of 57 years since 1970
Before 1970
Standard time changes
| Date | Change | New standard time | Clock label |
|---|---|---|---|
| Before 1970 | |||
| January 1, 1890 | Standard time back 24 seconds | UTC−5:08:36 | LMT |
| July 28, 1908 | Local mean time (UTC−5:08:36) replaced | UTC−5 | numeric only |
Daylight saving periods
| Years | Clocks go forward | Clocks go back | Shift and labels |
|---|---|---|---|
| Before 1970 | |||
| 1938 | January 1, September 25 | April 1 | 1 hour |
| 1939 | September 24 | March 26 | 1 hour |
| 1940 | not that year | March 24 | 1 hour |
| Since 1970 | |||
| 1986–1987 | 1 January, 00:00 | 1 April, 00:00 | 1 hour |
| 1990 | January 1 | April 1 | 1 hour |
| 1994 | January 1 | April 1 | 1 hour |
Also on UTC−5
Eirunepé (Brazil), Rio Branco (Brazil), Guayaquil (Ecuador), Colombia, Panama, Jamaica, Haiti, Turks and Caicos Islands, Cancún (Mexico) and Cuba (nearest first; 13 more on the list of offsets).
Clocks next door since 1970
- Eirunepé (Brazil) (989 km): same time except 2,467 days in 1985–1988, 1990, 1993, 1994 and 2008–2013.
- Rio Branco (Brazil) (1,036 km): same time except 2,441 days in 1985–1988, 1990, 1994 and 2008–2013.
- Bolivia (1,079 km): usually 1 hour ahead; different on 360 days in 1986, 1987, 1990 and 1994.
- Guayaquil (Ecuador) (1,141 km): same time except 429 days in 1986, 1987, 1990 and 1992–1994.
- Porto Velho (Brazil) (1,483 km): usually 1 hour ahead; different on 476 days in 1985–1988, 1990 and 1994.
How it compares
On standard time, clocks in Lima run 8 minutes ahead of local mean solar time.