TimeToZone

AEST to HST Converter

HST is 21 hours behind AEDT. 9:00 AM AEDT = 12:00 PM HST (previous day).

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AESTfrom
Australian Eastern Standard Time
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HST
Hawaii-Aleutian Standard Time
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HST is 21 hours behind AEDT at the moment. To convert AEST to HST, subtract 21 hours from the AEST time: 9:00 AM AEDT = 12:00 PM HST (previous day).

AEST (Australian Eastern Time) is used in New South Wales, Victoria, Tasmania, ACT; Queensland (Brisbane) all year. HST (Hawaii-Aleutian Time) is used in Hawaii (all year, no daylight saving time).

Queensland stays on AEST all year. AEST (Australian Eastern Standard Time) is not in force right now: New South Wales is currently on AEDT. This page uses whichever name applies on the date you pick, so the numbers below say AEDT.

AEST to HST time conversion table

AEST to HST on 7 Nov 2026. Today's date. Highlighted rows are 9 AM–5 PM in both places.

AESTHSTDay
12:00 AM AEDT3:00 AM HSTprevious day
1:00 AM AEDT4:00 AM HSTprevious day
2:00 AM AEDT5:00 AM HSTprevious day
3:00 AM AEDT6:00 AM HSTprevious day
4:00 AM AEDT7:00 AM HSTprevious day
5:00 AM AEDT8:00 AM HSTprevious day
6:00 AM AEDT9:00 AM HSTprevious day
7:00 AM AEDT10:00 AM HSTprevious day
8:00 AM AEDT11:00 AM HSTprevious day
9:00 AM AEDT12:00 PM HSTwork hours
10:00 AM AEDT1:00 PM HSTwork hours
11:00 AM AEDT2:00 PM HSTwork hours
12:00 PM AEDT3:00 PM HSTwork hours
1:00 PM AEDT4:00 PM HSTwork hours
2:00 PM AEDT5:00 PM HSTprevious day
3:00 PM AEDT6:00 PM HSTprevious day
4:00 PM AEDT7:00 PM HSTprevious day
5:00 PM AEDT8:00 PM HSTprevious day
6:00 PM AEDT9:00 PM HSTprevious day
7:00 PM AEDT10:00 PM HSTprevious day
8:00 PM AEDT11:00 PM HSTprevious day
9:00 PM AEDT12:00 AM HSTnight
10:00 PM AEDT1:00 AM HSTnight
11:00 PM AEDT2:00 AM HSTnight
  • Work rows — 9 AM–5 PM in both places
  • Night in the destination (10 PM–6 AM)

How to convert AEST to HST

Subtract 21 hours from the AEST time to get HST.

Example: 9:00 AM AEDT = 12:00 PM HST (previous day).

Across midnight: 8:00 PM AEDT = 11:00 PM HST (previous day). The date changes, so always check the day as well as the hour.

Time difference between AEST and HST

The time difference between AEST and HST is not the same all year, because the two sides change for daylight saving time on different dates. In 2026 it works out like this:

  • 1 Jan 2026 – 4 Apr 2026: HST is 21 hours behind of AEST.
  • 5 Apr 2026 – 3 Oct 2026: HST is 20 hours behind of AEST.
  • 4 Oct 2026 – 31 Dec 2026: HST is 21 hours behind of AEST.

AEST and HST during daylight saving time

  • AEST next changes on 4 Apr 2027: clocks go back one hour at 02:59 local time, from AEDT (UTC+11) to AEST (UTC+10).
  • HST does not observe daylight saving time; it stays on UTC−10 all year.

Best time for a meeting between AEST and HST

AEST and HST have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 7:00 AM AEDT, which is 10:00 AM HST.

Plan a meeting across more time zones.

AEST to HST FAQ

What is the time difference between AEST and HST?

Right now HST is 21 hours behind AEDT. The gap changes 3 times in 2026 because the two sides switch to daylight saving time on different dates.

What is 9 AM AEST in HST?

9:00 AM AEDT is 12:00 PM HST (previous day).

What is 12 PM (noon) AEST in HST?

12:00 PM AEDT is 3:00 PM HST (previous day).

Is HST ahead of or behind AEST?

HST is 21 hours behind AEDT, so it is earlier in HST than in AEST.

Does AEST change for daylight saving time?

Yes. AEST next changes on 4 Apr 2027, when clocks go back one hour from AEDT to AEST.

Does HST change for daylight saving time?

No. HST stays on the same offset all year, so conversions never shift for daylight saving time.

What is the best time for a meeting between AEST and HST?

AEST and HST have no shared 9 AM–5 PM window. The earliest slot that is reasonable on both sides is 7:00 AM AEDT, which is 10:00 AM HST.

Related conversions

Convert HST to AEST

Convert AEST to other time zones

Convert other time zones to HST

Learn more

Updated 7 November 2026. Time zone data: IANA tz database.