Historically distinct IANA time zone
Australia/Broken_Hill
Local time now
ACST · current offset
- Countries
- Ashmore and Cartier Islands
- GPS reference
- 31.95° S, 141.45° E
- Data source
- IANA australasia
- Aliases
- Australia/Yancowinna
Ashmore and Cartier IslandsNew South Wales (Yancowinna)
Geographic context
Where this clock belongs
The map marks the IANA reference location and associated country, not a time-zone boundary.
GPS reference: 31.95° S, 141.45° E. Associated countries: AU.
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.
New South Wales
South Australia
Original IANA source file: australasia.
A shared present
Same clock today, different past
These nearby zones follow the same current annual pattern, yet retain their own historical record.
Civil-time record
Recorded changes over time
From 1895 to 2027 · 124 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.
- +10:00 · AESTStandard time applies
- +09:00 · ACSTStandard time applies
- +09:30 · ACSTStandard time applies
- +10:30 · ACDTDaylight saving time begins
- +09:30 · ACSTStandard time applies
- +10:30 · ACDTDaylight saving time begins
Browse every recorded transition
| Local time after transition | Offset after | Abbreviation | Rule |
|---|---|---|---|
| 1895-02-01 00:34 | +10:00 | AEST | Standard time |
| 1896-08-22 23:00 | +09:00 | ACST | Standard time |
| 1899-05-01 00:30 | +09:30 | ACST | Standard time |
| 1917-01-01 03:00 | +10:30 | ACDT | Daylight saving time |
| 1917-03-25 02:00 | +09:30 | ACST | Standard time |
| 1942-01-01 03:00 | +10:30 | ACDT | Daylight saving time |
| 1942-03-29 02:00 | +09:30 | ACST | Standard time |
| 1942-09-27 03:00 | +10:30 | ACDT | Daylight saving time |
| 1943-03-28 02:00 | +09:30 | ACST | Standard time |
| 1943-10-03 03:00 | +10:30 | ACDT | Daylight saving time |
| 1944-03-26 02:00 | +09:30 | ACST | Standard time |
| 1971-10-31 03:00 | +10:30 | ACDT | Daylight saving time |
| 1972-02-27 02:00 | +09:30 | ACST | Standard time |
| 1972-10-29 03:00 | +10:30 | ACDT | Daylight saving time |
| 1973-03-04 02:00 | +09:30 | ACST | Standard time |
| 1973-10-28 03:00 | +10:30 | ACDT | Daylight saving time |
| 1974-03-03 02:00 | +09:30 | ACST | Standard time |
| 1974-10-27 03:00 | +10:30 | ACDT | Daylight saving time |
| 1975-03-02 02:00 | +09:30 | ACST | Standard time |
| 1975-10-26 03:00 | +10:30 | ACDT | Daylight saving time |
| 1976-03-07 02:00 | +09:30 | ACST | Standard time |
| 1976-10-31 03:00 | +10:30 | ACDT | Daylight saving time |
| 1977-03-06 02:00 | +09:30 | ACST | Standard time |
| 1977-10-30 03:00 | +10:30 | ACDT | Daylight saving time |
| 1978-03-05 02:00 | +09:30 | ACST | Standard time |
| 1978-10-29 03:00 | +10:30 | ACDT | Daylight saving time |
| 1979-03-04 02:00 | +09:30 | ACST | Standard time |
| 1979-10-28 03:00 | +10:30 | ACDT | Daylight saving time |
| 1980-03-02 02:00 | +09:30 | ACST | Standard time |
| 1980-10-26 03:00 | +10:30 | ACDT | Daylight saving time |
| 1981-03-01 02:00 | +09:30 | ACST | Standard time |
| 1981-10-25 03:00 | +10:30 | ACDT | Daylight saving time |
| 1982-04-04 02:00 | +09:30 | ACST | Standard time |
| 1982-10-31 03:00 | +10:30 | ACDT | Daylight saving time |
| 1983-03-06 02:00 | +09:30 | ACST | Standard time |
| 1983-10-30 03:00 | +10:30 | ACDT | Daylight saving time |
| 1984-03-04 02:00 | +09:30 | ACST | Standard time |
| 1984-10-28 03:00 | +10:30 | ACDT | Daylight saving time |
| 1985-03-03 02:00 | +09:30 | ACST | Standard time |
| 1985-10-27 03:00 | +10:30 | ACDT | Daylight saving time |
| 1986-03-16 02:00 | +09:30 | ACST | Standard time |
| 1986-10-19 03:00 | +10:30 | ACDT | Daylight saving time |
| 1987-03-15 02:00 | +09:30 | ACST | Standard time |
| 1987-10-25 03:00 | +10:30 | ACDT | Daylight saving time |
| 1988-03-20 02:00 | +09:30 | ACST | Standard time |
| 1988-10-30 03:00 | +10:30 | ACDT | Daylight saving time |
| 1989-03-19 02:00 | +09:30 | ACST | Standard time |
| 1989-10-29 03:00 | +10:30 | ACDT | Daylight saving time |
| 1990-03-04 02:00 | +09:30 | ACST | Standard time |
| 1990-10-28 03:00 | +10:30 | ACDT | Daylight saving time |
| 1991-03-03 02:00 | +09:30 | ACST | Standard time |
| 1991-10-27 03:00 | +10:30 | ACDT | Daylight saving time |
| 1992-03-01 02:00 | +09:30 | ACST | Standard time |
| 1992-10-25 03:00 | +10:30 | ACDT | Daylight saving time |
| 1993-03-07 02:00 | +09:30 | ACST | Standard time |
| 1993-10-31 03:00 | +10:30 | ACDT | Daylight saving time |
| 1994-03-06 02:00 | +09:30 | ACST | Standard time |
| 1994-10-30 03:00 | +10:30 | ACDT | Daylight saving time |
| 1995-03-05 02:00 | +09:30 | ACST | Standard time |
| 1995-10-29 03:00 | +10:30 | ACDT | Daylight saving time |
| 1996-03-31 02:00 | +09:30 | ACST | Standard time |
| 1996-10-27 03:00 | +10:30 | ACDT | Daylight saving time |
| 1997-03-30 02:00 | +09:30 | ACST | Standard time |
| 1997-10-26 03:00 | +10:30 | ACDT | Daylight saving time |
| 1998-03-29 02:00 | +09:30 | ACST | Standard time |
| 1998-10-25 03:00 | +10:30 | ACDT | Daylight saving time |
| 1999-03-28 02:00 | +09:30 | ACST | Standard time |
| 1999-10-31 03:00 | +10:30 | ACDT | Daylight saving time |
| 2000-03-26 02:00 | +09:30 | ACST | Standard time |
| 2000-10-29 03:00 | +10:30 | ACDT | Daylight saving time |
| 2001-03-25 02:00 | +09:30 | ACST | Standard time |
| 2001-10-28 03:00 | +10:30 | ACDT | Daylight saving time |
| 2002-03-31 02:00 | +09:30 | ACST | Standard time |
| 2002-10-27 03:00 | +10:30 | ACDT | Daylight saving time |
| 2003-03-30 02:00 | +09:30 | ACST | Standard time |
| 2003-10-26 03:00 | +10:30 | ACDT | Daylight saving time |
| 2004-03-28 02:00 | +09:30 | ACST | Standard time |
| 2004-10-31 03:00 | +10:30 | ACDT | Daylight saving time |
| 2005-03-27 02:00 | +09:30 | ACST | Standard time |
| 2005-10-30 03:00 | +10:30 | ACDT | Daylight saving time |
| 2006-04-02 02:00 | +09:30 | ACST | Standard time |
| 2006-10-29 03:00 | +10:30 | ACDT | Daylight saving time |
| 2007-03-25 02:00 | +09:30 | ACST | Standard time |
| 2007-10-28 03:00 | +10:30 | ACDT | Daylight saving time |
| 2008-04-06 02:00 | +09:30 | ACST | Standard time |
| 2008-10-05 03:00 | +10:30 | ACDT | Daylight saving time |
| 2009-04-05 02:00 | +09:30 | ACST | Standard time |
| 2009-10-04 03:00 | +10:30 | ACDT | Daylight saving time |
| 2010-04-04 02:00 | +09:30 | ACST | Standard time |
| 2010-10-03 03:00 | +10:30 | ACDT | Daylight saving time |
| 2011-04-03 02:00 | +09:30 | ACST | Standard time |
| 2011-10-02 03:00 | +10:30 | ACDT | Daylight saving time |
| 2012-04-01 02:00 | +09:30 | ACST | Standard time |
| 2012-10-07 03:00 | +10:30 | ACDT | Daylight saving time |
| 2013-04-07 02:00 | +09:30 | ACST | Standard time |
| 2013-10-06 03:00 | +10:30 | ACDT | Daylight saving time |
| 2014-04-06 02:00 | +09:30 | ACST | Standard time |
| 2014-10-05 03:00 | +10:30 | ACDT | Daylight saving time |
| 2015-04-05 02:00 | +09:30 | ACST | Standard time |
| 2015-10-04 03:00 | +10:30 | ACDT | Daylight saving time |
| 2016-04-03 02:00 | +09:30 | ACST | Standard time |
| 2016-10-02 03:00 | +10:30 | ACDT | Daylight saving time |
| 2017-04-02 02:00 | +09:30 | ACST | Standard time |
| 2017-10-01 03:00 | +10:30 | ACDT | Daylight saving time |
| 2018-04-01 02:00 | +09:30 | ACST | Standard time |
| 2018-10-07 03:00 | +10:30 | ACDT | Daylight saving time |
| 2019-04-07 02:00 | +09:30 | ACST | Standard time |
| 2019-10-06 03:00 | +10:30 | ACDT | Daylight saving time |
| 2020-04-05 02:00 | +09:30 | ACST | Standard time |
| 2020-10-04 03:00 | +10:30 | ACDT | Daylight saving time |
| 2021-04-04 02:00 | +09:30 | ACST | Standard time |
| 2021-10-03 03:00 | +10:30 | ACDT | Daylight saving time |
| 2022-04-03 02:00 | +09:30 | ACST | Standard time |
| 2022-10-02 03:00 | +10:30 | ACDT | Daylight saving time |
| 2023-04-02 02:00 | +09:30 | ACST | Standard time |
| 2023-10-01 03:00 | +10:30 | ACDT | Daylight saving time |
| 2024-04-07 02:00 | +09:30 | ACST | Standard time |
| 2024-10-06 03:00 | +10:30 | ACDT | Daylight saving time |
| 2025-04-06 02:00 | +09:30 | ACST | Standard time |
| 2025-10-05 03:00 | +10:30 | ACDT | Daylight saving time |
| 2026-04-05 02:00 | +09:30 | ACST | Standard time |
| 2026-10-04 03:00 | +10:30 | ACDT | Daylight saving time |
| 2027-04-04 02:00 | +09:30 | ACST | Standard time |
| 2027-10-03 03:00 | +10:30 | ACDT | Daylight saving time |