Historically distinct IANA time zone
America/Asuncion
Local time now
-03 · current offset
- Countries
- Paraguay
- GPS reference
- 25.27° S, 57.67° W
- Data source
- IANA southamerica
- Aliases
- None
- Rule groups
- Para
ParaguayGeographic context
Where this clock belongs
The map marks the IANA reference location and associated country, not a time-zone boundary.
GPS reference: 25.27° S, 57.67° W. Associated countries: PY.
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.
Paraguay Shanks & Pottenger say that spring transitions are 01:00 -> 02:00, and autumn transitions are 00:00 -> 23:00. Go with pre-1999 editions of Shanks, and with the IATA, who say transitions occur at 00:00. No time of the day is established for the adjustment, so people normally adjust their clocks at 0 hour of the given dates.
Original IANA source file: southamerica.
A shared present
Same clock today, different past
These nearby zones follow the same current annual pattern, yet retain their own historical record.
- America/Argentina/TucumanArgentina · 774 km from the reference location · Same annual clock since 2025
- America/Argentina/JujuyArgentina · 780 km from the reference location · Same annual clock since 2025
- America/Argentina/SaltaArgentina · 783 km from the reference location · Same annual clock since 2025
Argentina · 774 km from the reference location · Same annual clock since 2025Civil-time record
Recorded changes over time
From 1890 to 2024 · 104 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.
- -03:50 · AMTStandard time applies
- -04:00 · -04Standard time applies
- -03:00 · -03Standard time applies
- -04:00 · -04Standard time applies
- -03:00 · -03Daylight saving time begins
- -04:00 · -04Standard time applies
Browse every recorded transition
| Local time after transition | Offset after | Abbreviation | Rule |
|---|---|---|---|
| 1890-01-01 00:00 | -03:50 | AMT | Standard time |
| 1931-10-09 23:50 | -04:00 | -04 | Standard time |
| 1972-10-01 01:00 | -03:00 | -03 | Standard time |
| 1974-03-31 23:00 | -04:00 | -04 | Standard time |
| 1975-10-01 01:00 | -03:00 | -03 | Daylight saving time |
| 1976-02-29 23:00 | -04:00 | -04 | Standard time |
| 1976-10-01 01:00 | -03:00 | -03 | Daylight saving time |
| 1977-02-28 23:00 | -04:00 | -04 | Standard time |
| 1977-10-01 01:00 | -03:00 | -03 | Daylight saving time |
| 1978-02-28 23:00 | -04:00 | -04 | Standard time |
| 1978-10-01 01:00 | -03:00 | -03 | Daylight saving time |
| 1979-03-31 23:00 | -04:00 | -04 | Standard time |
| 1979-10-01 01:00 | -03:00 | -03 | Daylight saving time |
| 1980-03-31 23:00 | -04:00 | -04 | Standard time |
| 1980-10-01 01:00 | -03:00 | -03 | Daylight saving time |
| 1981-03-31 23:00 | -04:00 | -04 | Standard time |
| 1981-10-01 01:00 | -03:00 | -03 | Daylight saving time |
| 1982-03-31 23:00 | -04:00 | -04 | Standard time |
| 1982-10-01 01:00 | -03:00 | -03 | Daylight saving time |
| 1983-03-31 23:00 | -04:00 | -04 | Standard time |
| 1983-10-01 01:00 | -03:00 | -03 | Daylight saving time |
| 1984-03-31 23:00 | -04:00 | -04 | Standard time |
| 1984-10-01 01:00 | -03:00 | -03 | Daylight saving time |
| 1985-03-31 23:00 | -04:00 | -04 | Standard time |
| 1985-10-01 01:00 | -03:00 | -03 | Daylight saving time |
| 1986-03-31 23:00 | -04:00 | -04 | Standard time |
| 1986-10-01 01:00 | -03:00 | -03 | Daylight saving time |
| 1987-03-31 23:00 | -04:00 | -04 | Standard time |
| 1987-10-01 01:00 | -03:00 | -03 | Daylight saving time |
| 1988-03-31 23:00 | -04:00 | -04 | Standard time |
| 1988-10-01 01:00 | -03:00 | -03 | Daylight saving time |
| 1989-03-31 23:00 | -04:00 | -04 | Standard time |
| 1989-10-22 01:00 | -03:00 | -03 | Daylight saving time |
| 1990-03-31 23:00 | -04:00 | -04 | Standard time |
| 1990-10-01 01:00 | -03:00 | -03 | Daylight saving time |
| 1991-03-31 23:00 | -04:00 | -04 | Standard time |
| 1991-10-06 01:00 | -03:00 | -03 | Daylight saving time |
| 1992-02-29 23:00 | -04:00 | -04 | Standard time |
| 1992-10-05 01:00 | -03:00 | -03 | Daylight saving time |
| 1993-03-30 23:00 | -04:00 | -04 | Standard time |
| 1993-10-01 01:00 | -03:00 | -03 | Daylight saving time |
| 1994-02-26 23:00 | -04:00 | -04 | Standard time |
| 1994-10-01 01:00 | -03:00 | -03 | Daylight saving time |
| 1995-02-25 23:00 | -04:00 | -04 | Standard time |
| 1995-10-01 01:00 | -03:00 | -03 | Daylight saving time |
| 1996-02-29 23:00 | -04:00 | -04 | Standard time |
| 1996-10-06 01:00 | -03:00 | -03 | Daylight saving time |
| 1997-02-22 23:00 | -04:00 | -04 | Standard time |
| 1997-10-05 01:00 | -03:00 | -03 | Daylight saving time |
| 1998-02-28 23:00 | -04:00 | -04 | Standard time |
| 1998-10-04 01:00 | -03:00 | -03 | Daylight saving time |
| 1999-03-06 23:00 | -04:00 | -04 | Standard time |
| 1999-10-03 01:00 | -03:00 | -03 | Daylight saving time |
| 2000-03-04 23:00 | -04:00 | -04 | Standard time |
| 2000-10-01 01:00 | -03:00 | -03 | Daylight saving time |
| 2001-03-03 23:00 | -04:00 | -04 | Standard time |
| 2001-10-07 01:00 | -03:00 | -03 | Daylight saving time |
| 2002-04-06 23:00 | -04:00 | -04 | Standard time |
| 2002-09-01 01:00 | -03:00 | -03 | Daylight saving time |
| 2003-04-05 23:00 | -04:00 | -04 | Standard time |
| 2003-09-07 01:00 | -03:00 | -03 | Daylight saving time |
| 2004-04-03 23:00 | -04:00 | -04 | Standard time |
| 2004-10-17 01:00 | -03:00 | -03 | Daylight saving time |
| 2005-03-12 23:00 | -04:00 | -04 | Standard time |
| 2005-10-16 01:00 | -03:00 | -03 | Daylight saving time |
| 2006-03-11 23:00 | -04:00 | -04 | Standard time |
| 2006-10-15 01:00 | -03:00 | -03 | Daylight saving time |
| 2007-03-10 23:00 | -04:00 | -04 | Standard time |
| 2007-10-21 01:00 | -03:00 | -03 | Daylight saving time |
| 2008-03-08 23:00 | -04:00 | -04 | Standard time |
| 2008-10-19 01:00 | -03:00 | -03 | Daylight saving time |
| 2009-03-07 23:00 | -04:00 | -04 | Standard time |
| 2009-10-18 01:00 | -03:00 | -03 | Daylight saving time |
| 2010-04-10 23:00 | -04:00 | -04 | Standard time |
| 2010-10-03 01:00 | -03:00 | -03 | Daylight saving time |
| 2011-04-09 23:00 | -04:00 | -04 | Standard time |
| 2011-10-02 01:00 | -03:00 | -03 | Daylight saving time |
| 2012-04-07 23:00 | -04:00 | -04 | Standard time |
| 2012-10-07 01:00 | -03:00 | -03 | Daylight saving time |
| 2013-03-23 23:00 | -04:00 | -04 | Standard time |
| 2013-10-06 01:00 | -03:00 | -03 | Daylight saving time |
| 2014-03-22 23:00 | -04:00 | -04 | Standard time |
| 2014-10-05 01:00 | -03:00 | -03 | Daylight saving time |
| 2015-03-21 23:00 | -04:00 | -04 | Standard time |
| 2015-10-04 01:00 | -03:00 | -03 | Daylight saving time |
| 2016-03-26 23:00 | -04:00 | -04 | Standard time |
| 2016-10-02 01:00 | -03:00 | -03 | Daylight saving time |
| 2017-03-25 23:00 | -04:00 | -04 | Standard time |
| 2017-10-01 01:00 | -03:00 | -03 | Daylight saving time |
| 2018-03-24 23:00 | -04:00 | -04 | Standard time |
| 2018-10-07 01:00 | -03:00 | -03 | Daylight saving time |
| 2019-03-23 23:00 | -04:00 | -04 | Standard time |
| 2019-10-06 01:00 | -03:00 | -03 | Daylight saving time |
| 2020-03-21 23:00 | -04:00 | -04 | Standard time |
| 2020-10-04 01:00 | -03:00 | -03 | Daylight saving time |
| 2021-03-27 23:00 | -04:00 | -04 | Standard time |
| 2021-10-03 01:00 | -03:00 | -03 | Daylight saving time |
| 2022-03-26 23:00 | -04:00 | -04 | Standard time |
| 2022-10-02 01:00 | -03:00 | -03 | Daylight saving time |
| 2023-03-25 23:00 | -04:00 | -04 | Standard time |
| 2023-10-01 01:00 | -03:00 | -03 | Daylight saving time |
| 2024-03-23 23:00 | -04:00 | -04 | Standard time |
| 2024-10-06 01:00 | -03:00 | -03 | Daylight saving time |
| 2024-10-15 00:00 | -03:00 | -03 | Standard time |