Fortaleza time zone history
On standard time, clocks at Fortaleza run 26 minutes behind local mean solar time, the tenth-largest gap of the 79 zones whose clocks run behind the sun. Daylight saving time was used in 10 years since 1970, last in 2002; under the current rules the clocks no longer change.
UTC−3
Standard time is UTC−3 all year under the current rules.
Summer time in 10 of 57 years since 1970
Before 1970
Standard time changes
| Date | Change | New standard time | Clock label |
|---|---|---|---|
| Before 1970 | |||
| January 1, 1914 | Local mean time (UTC−2:34) replaced | UTC−3 | numeric only |
Daylight saving periods
| Years | Clocks go forward | Clocks go back | Shift and labels |
|---|---|---|---|
| Before 1970 | |||
| 1931 | October 3 | not that year | 1 hour |
| 1932 | October 3 | April 1 | 1 hour |
| 1933 | not that year | April 1 | 1 hour |
| 1949 | December 1 | not that year | 1 hour |
| 1950 | December 1 | April 16 | 1 hour |
| 1951–1952 | 1 December, 00:00 | 1 April, 00:00 | 1 hour |
| 1953 | not that year | March 1 | 1 hour |
| 1963 | December 9 | not that year | 1 hour |
| 1964 | not that year | March 1 | 1 hour |
| 1965 | January 31, December 1 | April 1 | 1 hour |
| 1966–1967 | 1 November, 00:00 | 1 March, 01:00 | 1 hour |
| 1968 | not that year | March 1 | 1 hour |
| Since 1970 | |||
| 1985 | November 2 | not that year | 1 hour |
| 1986 | October 25 | March 15 | 1 hour |
| 1987 | October 25 | February 14 | 1 hour |
| 1988 | October 16 | February 7 | 1 hour |
| 1989 | October 15 | January 29 | 1 hour |
| 1990 | not that year | February 11 | 1 hour |
| 1999–2002 | dates set year by year (listed below) | 1 hour | |
1999–2002, year by year
- 1999 forward October 3
- 2000 forward October 8; back February 27, October 22
- 2001 forward October 14
- 2002 back February 17
Also on UTC−3
Recife (Brazil), Maceió (Brazil), Bahia (Brazil), Belém (Brazil), Araguaína (Brazil), French Guiana, Santarém (Brazil), Suriname, São Paulo (Brazil) and Paraguay (nearest first; 19 more on the list of offsets).
Clocks next door since 1970
- Recife (625 km): same time except 7 days in 2000.
- Fernando de Noronha (675 km): usually 1 hour ahead; different on 8 days in 1985–1990 and 1999–2002.
- Maceió (729 km): same time except 119 days in 1995 and 1996.
- Bahia (1,030 km): same time except 1,469 days in 1990–2003, 2011 and 2012.
- Belém (1,137 km): same time except 511 days in 1988–1990 and 1999–2002.
How it compares
Standard time has stayed at UTC−3 since 1914.