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Convert Atlantic Time to Australian Western Time

AST · UTC−4 → AWST · UTC+8

AST is 12 hours behind AWST

Today Halifax is on ADT (UTC−3) and Perth on AWST (UTC+8), so right now Halifax is 11 hours behind Perth.

Halifax · ADT

Wednesday, 7 October 2026

Perth · AWST

Wednesday, 7 October 2026

When are both sides at work?

0003060912151821
HalifaxADT · -03:00
0003060912151821
PerthAWST · +08:00
1114172023020508

No overlap in standard working hours. Closest workable window: 09:00–12:00 in Halifax, which is 20:00–23:00 in Perth.

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

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08:24 Wed 7 Oct Halifax = 19:24 Wed 7 Oct Perth

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Hour-by-hour conversion

Halifax (AST)Perth (AWST)
00:0011:00
01:0012:00
02:0013:00
03:0014:00
04:0015:00
05:0016:00
06:0017:00
07:0018:00
08:0019:00Now
09:0020:00
10:0021:00
11:0022:00
12:0023:00
13:0000:00next day
14:0001:00next day
15:0002:00next day
16:0003:00next day
17:0004:00next day
18:0005:00next day
19:0006:00next day
20:0007:00next day
21:0008:00next day
22:0009:00next day
23:0010:00next day

About this conversion

AST here means Atlantic Time, represented by Halifax (America/Halifax), currently UTC−3. AWST means Australian Western Time, represented by Perth (Australia/Perth), currently UTC+8.

AST is used by 32 zones, including Canada. If you meant a different one, see every meaning of AST.

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 Halifax; day boundaries are marked where the date differs.

Quick answers

  • 09:00 AST is 20:00 AWST
  • 12:00 AST is 23:00 AWST
  • 15:00 AST is 02:00 AWST
  • 18:00 AST is 05:00 AWST

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