ACST to HST
Convert Australian Central Time — Adelaide to Hawaii Time — Honolulu — fast, accurate, and daylight-saving aware.
When it's 9:00 AM in Adelaide, it's 1:30 PM in Honolulu. Honolulu is 19½ hours behind Adelaide. Use the converter above to turn any ACST time into HST, or scan the hour-by-hour table below for the full day.
ACST to HST at a glance
Planning a meeting between Adelaide and Honolulu
Adelaide and Honolulu share no standard 9-to-5 overlap, so a live call usually means one side taking an early-morning or late-evening slot. The hourly table below helps you pick the least-inconvenient time for everyone.
Hour-by-hour: Adelaide to Honolulu
A full day mapped from ACST to HST.
Frequently asked
Is Honolulu ahead of or behind Adelaide?
Honolulu is 19½ hours behind Adelaide.
What is 12:00 PM ACST in HST?
12:00 PM in Adelaide is 4:30 PM in Honolulu.
Does this converter account for daylight saving time?
Yes. Conversions use the IANA time zone database, so ACST and HST automatically reflect the correct daylight-saving offset for the current date.