Australian Central Time (ACT) or the Australian Central Time Zone. This can add a bit of confusion as the term Australian Central Time does not differentiate between standard time and Daylight Saving Time, so Australian Central Time switches between ACST and ACDT in areas that use DST during part of the year.

Australia has two generic time zones that include both standard and daylight time: Australian Eastern Time (AET) and Australian Central Time (ACT). The country has a complex set of time zones, some of which have an unusual UTC offset.

Converting ACDT to Other Australian Time Zones

• Australian Central Daylight Time (ACDT) is 30 minutes behind Lord Howe Daylight Time (LHDT).
  To convert ACDT to LHDT, add half an hour.
• Australian Central Daylight Time (ACDT) is 30 minutes behind Australian Eastern Daylight Time (AEDT).
  To convert ACDT to AEDT, add half an hour.
• Australian Central Daylight Time (ACDT) is 1 hour and 45 minutes ahead of Australian Central Western Standard Time (ACWST).
  To convert ACDT to ACWST, subtract one hour and 45 minutes.
• Australian Central Daylight Time (ACDT) is 2 hours and 30 minutes ahead of Australian Western Standard Time (AWST).
  To convert ACDT to AWST, subtract two hours and 30 minutes.

Time Zone Converter: UTC to ACST

Where and When is ACDT Observed?

Australia

This time zone is in use, but not observed in any location at this time.

Other Central Daylight Time Zones

Time zones can have similar names and abbreviations but have a different UTC offset:

• Central Daylight Time (CDT): UTC -5
• Central European Summer Time (CEST): UTC +2

Other Time Zones in UTC +10:30

Some time zones exist that have the same offset as ACDT, but can be found under a different name:

• LHST – Lord Howe Standard Time

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