Sydney to HST time
SydneyAustralia3:29:53 AMMon 28 Sept · AEST UTC+10
20 hHST is behind
HSTHawaii Time7:29:53 AMSun 27 Sept · HST UTC−10Synchronising…
Sydney and HST time difference
HST is currently 20 h behind Sydney. Sydney is on AEST (UTC+10:00) and HST is on HST (UTC−10:00).
The difference can change with daylight saving time. The next change is in Sydney on Sunday, 4 October 2026, after which HST will be 21 h behind Sydney.
If it is 9:00 in Sydney, what time is it in HST?
It is 13:00 in HST (previous day).
What is the best time for a call between Sydney and HST?
Use the planner above: green hours are within 9:00–17:00 in both places.