Offset
The time difference between Lord Howe Time and Hawaii Time is 20.5 hours.
Lord Howe Time (LHST) is ahead of Hawaii Time (HST).
LHST: UTC+10:30
HST: UTC-10
Neither Lord Howe Time nor Hawaii Time is currently observing daylight saving time.
When to schedule
Standard business hours (9 AM–5 PM, Mon–Fri) in Lord Howe Time and Hawaii Time don't overlap on the same weekday. Hawaii Time is 20 hours behind Lord Howe Time.
Realistic options: hand off asynchronously, or stretch one side by an hour to catch the other team at the start or end of their day.
This window may shift by an hour during daylight saving time.
Public holidays in 2026
National public holidays can affect availability — a counterpart is likely off work on their own holidays, so it's worth planning meetings and deadlines around them.
Australia
- New Year's DayThu, Jan 1
- Australia DayMon, Jan 26
- Good FridayFri, Apr 3
- Easter MondayMon, Apr 6
- Christmas DayFri, Dec 25
- St. Stephen's DayMon, Dec 28
United States
- New Year's DayThu, Jan 1
- Martin Luther King, Jr. DayMon, Jan 19
- Presidents DayMon, Feb 16
- Memorial DayMon, May 25
- Juneteenth National Independence DayFri, Jun 19
- Independence DayFri, Jul 3
- Labour DayMon, Sep 7
- Columbus DayMon, Oct 12
- Veterans DayWed, Nov 11
- Thanksgiving DayThu, Nov 26
- Christmas DayFri, Dec 25
About these zones
Lord Howe Time is also known as LHST, or LHDT. To call Australia, dial +61.
Hawaii Time is also known as HST. To call United States, dial +1.
Hawaii Time is approximately 4,650 miles northeast of Lord Howe Time.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| LHST | HST | Day |
|---|---|---|
| 12:00 am | 3:30 am | -1 day |
| 1:00 am | 4:30 am | -1 day |
| 2:00 am | 5:30 am | -1 day |
| 3:00 am | 6:30 am | -1 day |
| 4:00 am | 7:30 am | -1 day |
| 5:00 am | 8:30 am | -1 day |
| 6:00 am | 9:30 am | -1 day |
| 7:00 am | 10:30 am | -1 day |
| 8:00 am | 11:30 am | -1 day |
| 9:00 am | 12:30 pm | -1 day |
| 10:00 am | 1:30 pm | -1 day |
| 11:00 am | 2:30 pm | -1 day |
| 12:00 pm | 3:30 pm | -1 day |
| 1:00 pm | 4:30 pm | -1 day |
| 2:00 pm | 5:30 pm | -1 day |
| 3:00 pm | 6:30 pm | -1 day |
| 4:00 pm | 7:30 pm | -1 day |
| 5:00 pm | 8:30 pm | -1 day |
| 6:00 pm | 9:30 pm | -1 day |
| 7:00 pm | 10:30 pm | -1 day |
| 8:00 pm | 11:30 pm | -1 day |
| 9:00 pm | 12:30 am | Same day |
| 10:00 pm | 1:30 am | Same day |
| 11:00 pm | 2:30 am | Same day |
Daylight saving time
Lord Howe Time observes daylight saving time; Hawaii Time does not. The offset between the two zones changes when Lord Howe Time transitions: on Sunday, October 4, 2026, clocks spring forward from LHST to LHDT.
See the daylight saving time page for transition dates across every time zone.
Daylight today
- Sunrise
- 6:47 AM
- Sunset
- 4:59 PM
- Day length
- 10h 11m
- Sunrise
- 5:50 AM
- Sunset
- 7:12 PM
- Day length
- 13h 22m
Daylight overlap: 8h 54m — 6:47 AM–3:42 PM in Lord Howe Time (10:17 AM–7:12 PM in Hawaii Time). Both locations are in daylight during this window.
Cities in these zones
Cities in Hawaii Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Hawaii Time
- HNL
Related conversions
Common conversions
- What is 9:00 am LHST in HST?
- 9:00 am LHST is 12:30 pm HST, the previous day.
- What is 12:00 pm LHST in HST?
- 12:00 pm LHST is 3:30 pm HST, the previous day.
- What is 12:30 pm LHST in HST?
- 12:30 pm LHST is 4:00 pm HST, the previous day.
- What is 2:00 pm LHST in HST?
- 2:00 pm LHST is 5:30 pm HST, the previous day.
- What is 5:00 pm LHST in HST?
- 5:00 pm LHST is 8:30 pm HST, the previous day.
- What is 11:30 pm LHST in HST?
- 11:30 pm LHST is 3:00 am HST.