Convert HST to ACDT Time
Free online converter with current times, time difference, and conversion table between HST and ACDT time zones.
Current time in HST: Loading...
Current time in ACDT: Loading...
Time difference: +20.5 hours
HST to ACDT Conversion Table
This table shows common HST times converted to ACDT time:
About HST and ACDT Time Zones
HST Time Zone
Full Name: Hawaii Standard Time
UTC Offset: UTC-10
Current Time: Loading...
Standard time in Hawaii.
Used in: USA (Hawaii), French Polynesia
ACDT Time Zone
Full Name: Australian Central Daylight Time
UTC Offset: UTC+10.5
Current Time: Loading...
Daylight saving time in Central Australia.
Used in: Australia (SA)
How to Convert HST to ACDT
Enter HST Time
Enter the HST time you want to convert using the time picker or by typing directly in 24-hour format.
Click Convert
Click the "Convert Time" button to perform the conversion from HST to ACDT.
View Result
The equivalent ACDT time will be displayed, along with the time difference between the two zones.
Use Conversion Table
For quick reference, you can also use the conversion table below that shows common HST times converted to ACDT.
Common Uses for HST to ACDT Conversion
International Business
Schedule meetings and calls between locations in USA (Hawaii) and Australia (SA) time zones.
Travel Planning
Calculate arrival times and plan activities when traveling between USA (Hawaii) and Australia (SA).
Event Scheduling
Convert event times for international broadcasts, webinars, or sports events between these regions.
Keeping in Touch
Find the best times to call friends, family, or colleagues across these time zones.
Frequently Asked Questions
The time difference between HST and ACDT is +20.5 hours. This means that when it's noon (12:00 PM) in HST, it's 8:00 AM in ACDT.
To convert HST to ACDT time, add 20.5 hours to the HST time. You can use our converter at the top of this page for instant and accurate conversions.
HST does not observe DST. ACDT observes DST.
Minimal overlap in business hours.
Our converter uses standard time zone offsets. For the most accurate conversions during DST transition periods, please verify the exact dates when DST begins or ends in the relevant regions, as these can vary by year and location.