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Convert Hawaii-Aleutian Time to Lord Howe Time

HAST · UTC−9 → LHST · UTC+10:30

HAST is 19 hours 30 minutes behind LHST

Adak · HADT

Monday, 7 September 2026

Lord Howe · LHST

Tuesday, 8 September 2026

When are both sides at work?

0003060912151821
AdakHADT · -09:00
0003060912151821
Lord HoweLHST · +10:30
1922010407101316

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

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

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22:06 Mon 7 Sep Adak = 17:36 Tue 8 Sep Lord Howe

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Hour-by-hour conversion

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

About this conversion

HAST here means Hawaii-Aleutian Time, represented by Adak (America/Adak), currently UTC−9. LHST means Lord Howe Time, represented by Lord Howe (Australia/Lord_Howe), currently UTC+10:30.

HAST is used by 2 zones, including United States. If you meant a different one, 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 Adak; day boundaries are marked where the date differs.

Quick answers

  • 09:00 HAST is 04:30 LHST
  • 12:00 HAST is 07:30 LHST
  • 15:00 HAST is 10:30 LHST
  • 18:00 HAST is 13:30 LHST

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