tzdata rule group
Brazil
Historical rule context · 16 represented zones
A rule group describes recurring clock changes. It is not itself a place or an IANA time-zone identifier.
- First rule
- 1931
- Last rule
- 2019
- Rule entries
- 57
- Source files
- southamerica
Notes from the time database
Context for this rule
These source notes are preserved from tzdata. They help explain a rule’s period, without adding claims beyond the source.
Decree 20,466 < (1931-10-01) Decree 21,896 < (1932-01-10)
Where it appears
Zones using Brazil
Only historically distinct canonical zones from this atlas are listed.
- America/AraguainaBrazil
- America/BahiaBrazil
- America/BelemBrazil
- America/Boa_VistaBrazil
- America/Campo_GrandeBrazil
- America/CuiabaBrazil
- America/EirunepeBrazil
- America/FortalezaBrazil
- America/MaceioBrazil
- America/ManausBrazil
- America/NoronhaBrazil
- America/Porto_VelhoBrazil
- America/RecifeBrazil
- America/Rio_BrancoBrazil
- America/SantaremBrazil
- America/Sao_PauloBrazil
BrazilOriginal rule fields
Recorded rule entries
Structured directly from tzdata’s Rule lines.
| From | To | Type | In | On | At | Save |
|---|---|---|---|---|---|---|
| 1931 | only | - | Oct | 3 | 11:00 | 1:00 |
| 1932 | 1933 | - | Apr | 1 | 0:00 | 0 |
| 1932 | only | - | Oct | 3 | 0:00 | 1:00 |
| 1949 | 1952 | - | Dec | 1 | 0:00 | 1:00 |
| 1950 | only | - | Apr | 16 | 1:00 | 0 |
| 1951 | 1952 | - | Apr | 1 | 0:00 | 0 |
| 1953 | only | - | Mar | 1 | 0:00 | 0 |
| 1963 | only | - | Dec | 9 | 0:00 | 1:00 |
| 1964 | only | - | Mar | 1 | 0:00 | 0 |
| 1965 | only | - | Jan | 31 | 0:00 | 1:00 |
| 1965 | only | - | Mar | 31 | 0:00 | 0 |
| 1965 | only | - | Dec | 1 | 0:00 | 1:00 |
| 1966 | 1968 | - | Mar | 1 | 0:00 | 0 |
| 1966 | 1967 | - | Nov | 1 | 0:00 | 1:00 |
| 1985 | only | - | Nov | 2 | 0:00 | 1:00 |
| 1986 | only | - | Mar | 15 | 0:00 | 0 |
| 1986 | only | - | Oct | 25 | 0:00 | 1:00 |
| 1987 | only | - | Feb | 14 | 0:00 | 0 |
| 1987 | only | - | Oct | 25 | 0:00 | 1:00 |
| 1988 | only | - | Feb | 7 | 0:00 | 0 |
| 1988 | only | - | Oct | 16 | 0:00 | 1:00 |
| 1989 | only | - | Jan | 29 | 0:00 | 0 |
| 1989 | only | - | Oct | 15 | 0:00 | 1:00 |
| 1990 | only | - | Feb | 11 | 0:00 | 0 |
| 1990 | only | - | Oct | 21 | 0:00 | 1:00 |
| 1991 | only | - | Feb | 17 | 0:00 | 0 |
| 1991 | only | - | Oct | 20 | 0:00 | 1:00 |
| 1992 | only | - | Feb | 9 | 0:00 | 0 |
| 1992 | only | - | Oct | 25 | 0:00 | 1:00 |
| 1993 | only | - | Jan | 31 | 0:00 | 0 |
| 1993 | 1995 | - | Oct | Sun>=11 | 0:00 | 1:00 |
| 1994 | 1995 | - | Feb | Sun>=15 | 0:00 | 0 |
| 1996 | only | - | Feb | 11 | 0:00 | 0 |
| 1996 | only | - | Oct | 6 | 0:00 | 1:00 |
| 1997 | only | - | Feb | 16 | 0:00 | 0 |
| 1997 | only | - | Oct | 6 | 0:00 | 1:00 |
| 1998 | only | - | Mar | 1 | 0:00 | 0 |
| 1998 | only | - | Oct | 11 | 0:00 | 1:00 |
| 1999 | only | - | Feb | 21 | 0:00 | 0 |
| 1999 | only | - | Oct | 3 | 0:00 | 1:00 |
| 2000 | only | - | Feb | 27 | 0:00 | 0 |
| 2000 | 2001 | - | Oct | Sun>=8 | 0:00 | 1:00 |
| 2001 | 2006 | - | Feb | Sun>=15 | 0:00 | 0 |
| 2002 | only | - | Nov | 3 | 0:00 | 1:00 |
| 2003 | only | - | Oct | 19 | 0:00 | 1:00 |
| 2004 | only | - | Nov | 2 | 0:00 | 1:00 |
| 2005 | only | - | Oct | 16 | 0:00 | 1:00 |
| 2006 | only | - | Nov | 5 | 0:00 | 1:00 |
| 2007 | only | - | Feb | 25 | 0:00 | 0 |
| 2007 | only | - | Oct | Sun>=8 | 0:00 | 1:00 |
| 2008 | 2017 | - | Oct | Sun>=15 | 0:00 | 1:00 |
| 2008 | 2011 | - | Feb | Sun>=15 | 0:00 | 0 |
| 2012 | only | - | Feb | Sun>=22 | 0:00 | 0 |
| 2013 | 2014 | - | Feb | Sun>=15 | 0:00 | 0 |
| 2015 | only | - | Feb | Sun>=22 | 0:00 | 0 |
| 2016 | 2019 | - | Feb | Sun>=15 | 0:00 | 0 |
| 2018 | only | - | Nov | Sun>=1 | 0:00 | 1:00 |