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Convert Greenwich Mean Time to Lord Howe Time

GMT · UTC+1 → LHST · UTC+10:30

GMT is 9 hours 30 minutes behind LHST

London · BST

Tuesday, 8 September 2026

Lord Howe · LHST

Tuesday, 8 September 2026

When are both sides at work?

0003060912151821
LondonBST · +01:00
0003060912151821
Lord HoweLHST · +10:30
0912151821000306

No overlap in standard working hours. Closest workable window: 09:00–13:30 in London, which is 18:30–23:00 in Lord Howe.

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

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08:05 Tue 8 Sep London = 17:35 Tue 8 Sep Lord Howe

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Hour-by-hour conversion

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

About this conversion

GMT here means Greenwich Mean Time, represented by London (Europe/London), currently UTC+1. LHST means Lord Howe Time, represented by Lord Howe (Australia/Lord_Howe), currently UTC+10:30.

GMT is used by 22 zones, including United Kingdom. If you meant a different one, see every meaning of GMT.

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 London; day boundaries are marked where the date differs.

Quick answers

  • 09:00 GMT is 18:30 LHST
  • 12:00 GMT is 21:30 LHST
  • 15:00 GMT is 00:30 LHST
  • 18:00 GMT is 03:30 LHST

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