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Convert Australian Central Time to Hawaii-Aleutian Time

ACST · UTC+9:30 → HAST · UTC−10

ACST is 19 hours 30 minutes ahead of HAST

Adelaide · ACDT

Wednesday, 7 October 2026

Adak · HADT

Wednesday, 7 October 2026

When are both sides at work?

0003060912151821
AdelaideACDT · +10:30
0003060912151821
AdakHADT · -09:00
0407101316192201

Shared working hours: 09:00–13:30 in Adelaide is 13:30–18:00 in Adak.

Working (09–18) Awake, off the clock Asleep (23–07)

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21:53 Wed 7 Oct Adelaide = 02:23 Wed 7 Oct Adak

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Hour-by-hour conversion

Adelaide (ACST)Adak (HAST)
00:0004:30prev. day
01:0005:30prev. day
02:0006:30prev. day
03:0007:30prev. day
04:0008:30prev. day
05:0009:30prev. day
06:0010:30prev. day
07:0011:30prev. day
08:0012:30prev. day
09:0013:30prev. dayBoth at work
10:0014:30prev. dayBoth at work
11:0015:30prev. dayBoth at work
12:0016:30prev. dayBoth at work
13:0017:30prev. dayBoth at work
14:0018:30prev. day
15:0019:30prev. day
16:0020:30prev. day
17:0021:30prev. day
18:0022:30prev. day
19:0023:30prev. day
20:0000:30
21:0001:30Now
22:0002:30
23:0003:30

About this conversion

ACST here means Australian Central Time, represented by Adelaide (Australia/Adelaide), currently UTC+10:30. HAST means Hawaii-Aleutian Time, represented by Adak (America/Adak), currently UTC−9.

ACST is used by 2 zones, including Australia. If you meant a different one, see every meaning of ACST.

HAST is used by 2 zones, including United States. See every meaning of HAST.

Working hours are shown as 09:00–18:00 local, and sleeping hours as 23:00–07:00. The hour table is anchored on the current day in Adelaide; day boundaries are marked where the date differs.

Quick answers

  • 09:00 ACST is 13:30 HAST
  • 12:00 ACST is 16:30 HAST
  • 15:00 ACST is 19:30 HAST
  • 18:00 ACST is 22:30 HAST

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