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Convert Atlantic Time to Hawaii-Aleutian Time

AST · UTC−4 → HAST · UTC−10

AST is 6 hours ahead of HAST

Halifax · ADT

Wednesday, 7 October 2026

Adak · HADT

Wednesday, 7 October 2026

When are both sides at work?

0003060912151821
HalifaxADT · -03:00
0003060912151821
AdakHADT · -09:00
1821000306091215

Shared working hours: 15:00–18:00 in Halifax is 09:00–12:00 in Adak.

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

Pick a time and share it

08:24 Wed 7 Oct Halifax = 02:24 Wed 7 Oct Adak

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Hour-by-hour conversion

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

About this conversion

AST here means Atlantic Time, represented by Halifax (America/Halifax), currently UTC−3. HAST means Hawaii-Aleutian Time, represented by Adak (America/Adak), currently UTC−9.

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

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 Halifax; day boundaries are marked where the date differs.

Quick answers

  • 09:00 AST is 03:00 HAST
  • 12:00 AST is 06:00 HAST
  • 15:00 AST is 09:00 HAST
  • 18:00 AST is 12:00 HAST

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