Paraguay time zone history
On October 15, 2024 the summer offset, UTC−3, became permanent standard time; the clocks did not move that day. Daylight saving time was used in 50 years since 1970, last in 2024; 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 50 of 57 years since 1970
Before 1970
Standard time changes
| Date | Change | New standard time | Clock label |
|---|---|---|---|
| Before 1970 | |||
| January 1, 1890 | Local mean time (UTC−3:50:40) replaced | UTC−3:50:40 | AMT |
| October 10, 1931 | Standard time back 9 minutes | UTC−4 | numeric only |
| Since 1970 | |||
| October 1, 1972 | Standard time forward 1 hour | UTC−3 | numeric only |
| April 1, 1974 | Standard time back 1 hour | UTC−4 | numeric only |
| October 15, 2024 | Summer offset kept as standard time; clocks did not move | UTC−3 | numeric only |
Daylight saving periods
| Years | Clocks go forward | Clocks go back | Shift and labels |
|---|---|---|---|
| 1975 | October 1 | not that year | 1 hour |
| 1976–1978 | 1 October, 00:00 | 1 March, 00:00 | 1 hour |
| 1979–1988 | 1 October, 00:00 | 1 April, 00:00 | 1 hour |
| 1989 | October 22 | April 1 | 1 hour |
| 1990 | October 1 | April 1 | 1 hour |
| 1991 | October 6 | April 1 | 1 hour |
| 1992 | October 5 | March 1 | 1 hour |
| 1993 | October 1 | March 31 | 1 hour |
| 1994–1995 | 1 October, 00:00 | fourth Sunday in February, 00:00 | 1 hour |
| 1996 | October 6 | March 1 | 1 hour |
| 1997 | October 5 | February 23 | 1 hour |
| 1998–2001 | first Sunday in October, 00:00 | first Sunday in March, 00:00 | 1 hour |
| 2002–2003 | first Sunday in September, 00:00 | first Sunday in April, 00:00 | 1 hour |
| 2004 | October 17 | April 4 | 1 hour |
| 2005–2009 | third Sunday in October, 00:00 | second Sunday in March, 00:00 | 1 hour |
| 2010–2012 | first Sunday in October, 00:00 | second Sunday in April, 00:00 | 1 hour |
| 2013–2024 | first Sunday in October, 00:00 | fourth Sunday in March, 00:00 | 1 hour |
Also on UTC−3
Tucumán (Argentina), Jujuy (Argentina), Salta (Argentina), Catamarca (Argentina), Cordoba (Argentina), La Rioja (Argentina), Buenos Aires (Argentina), Uruguay, São Paulo (Brazil) and San Luis (Argentina) (nearest first; 19 more on the list of offsets).
Clocks next door since 1970
- Campo Grande (Brazil) (620 km): same time except 5,522 days in 1972–2026; 1 hour behind today.
- Tucumán (Argentina) (774 km): usually 1 hour ahead; different on 8,974 days in 1972–2026; same time today.
- Jujuy (Argentina) (780 km): usually 1 hour ahead; different on 9,397 days in 1972–2026; same time today.
- Salta (Argentina) (783 km): usually 1 hour ahead; different on 9,095 days in 1972–2026; same time today.
- Catamarca (Argentina) (880 km): usually 1 hour ahead; different on 9,114 days in 1972–2026; same time today.
How it compares
Clocks have been changed 102 times since 1970, the second-most of the 30 zones on UTC−3 standard time.
On standard time, clocks in Asunción run 51 minutes ahead of local mean solar time.