Australian Central Daylight Time (ACDT)
Australian Central Daylight Time (ACDT) is UTC+10:30. It is the daylight saving (summer) time of South Australia during daylight saving time; in winter the area returns to ACST (UTC+9:30).
Convert ACDT
Where ACDT is used
South Australia during daylight saving time.
Major cities on Australia/Adelaide
ACDT and daylight saving time
The next change is on 4 April 2027 at 02:59 local time: clocks go back one hour, from ACDT (UTC+10:30) to ACST (UTC+9:30).
ACDT FAQ
What is ACDT?
Australian Central Daylight Time (ACDT) is UTC+10:30. It is the daylight saving (summer) time of South Australia during daylight saving time; in winter the area returns to ACST (UTC+9:30).
What is the current ACDT time?
ACDT is UTC+10:30. The live clock on this page shows the current Australian Central Daylight Time time, updated every second.
What is the difference between ACDT and ACST?
ACST is one hour behind ACDT. ACDT is used during daylight saving time; ACST is the standard time.
Which countries use ACDT?
ACDT is used in South Australia during daylight saving time.
Updated 7 November 2026. Time zone data: IANA tz database.