HST to LHST Time Converter
Use this HST to LHST time converter to compare United States and Australia time instantly. LHST is 20 hours and 30 minutes ahead of HST, so 9:00 AM HST becomes 5:30 AM (next day) LHST and 5:00 PM HST becomes 1:30 PM (next day) LHST. The page is useful for business-hours overlap, international calls, remote-team handoffs, webinars, and travel planning, with daylight saving adjustments handled automatically.
HST to LHST Quick Facts
Use this HST to LHST converter to compare United States and Australia time, check the 20 hours and 30 minutes gap, and confirm the right slot for calls, handoffs, and deadlines. Find the best overlap for calls and meetings.
How to Convert HST to LHST
Converting between Hawaii Standard Time and Lord Howe Standard Time means accounting for a 20 hours and 30 minutes gap — here's how to do it in under 10 seconds with no sign-up.
Pick the date and time in Hawaii Standard Time (UTC -10) that you want to convert. Hit "Now" to load the current HST time instantly, or use "+1h" to step forward and compare.
The equivalent Lord Howe Standard Time (UTC +10:30) time appears immediately. Since LHST is 20 hours and 30 minutes ahead of HST, conversions often cross midnight — look for the date-change label.
Click "Copy Time" to grab the LHST result for your calendar or message. Use "+1d" to check how the conversion shifts across dates — useful when Daylight Saving Time changes the gap.
Why Choose Our HST to LHST Converter
With 20 hours and 30 minutes between HST and LHST, business-hours overlap is limited. This tool instantly shows which hours work on both sides, so you can lock in a meeting without a chain of "does 3 PM work for you?" emails.
A HST evening at 9 PM is already the next morning in LHST. This converter flags date changes beside the result — critical when booking flights, hitting deadlines, or scheduling across the United States–Australia corridor.
The half-hour offset between HST (UTC -10) and LHST (UTC +10:30) already makes mental math tricky — add Daylight Saving Time and the gap can shift further. This converter uses live UTC offsets, so you're always accurate.
Product launches, sports matches, and webinars are often announced in HST. Convert the event time to LHST so you know exactly when to tune in — with a 20 hours and 30 minutes difference, a morning event in United States falls during work hours in Australia.
HST to LHST Time Conversion Chart
Quick-reference conversion table covering every hour of the day at a glance.
Hawaii Standard Time to Lord Howe Standard Time full day schedule
| Hawaii Standard Time | Lord Howe Standard Time |
|---|---|
| 12:00 AM |
8:30 PM
|
| 1:00 AM |
9:30 PM
|
| 2:00 AM |
10:30 PM
|
| 3:00 AM |
11:30 PM
|
| 4:00 AM |
12:30 AM
(next day)
|
| 5:00 AM |
1:30 AM
(next day)
|
| 6:00 AM |
2:30 AM
(next day)
|
| 7:00 AM |
3:30 AM
(next day)
|
| 8:00 AM |
4:30 AM
(next day)
|
| 9:00 AM |
5:30 AM
(next day)
|
| 10:00 AM |
6:30 AM
(next day)
|
| 11:00 AM |
7:30 AM
(next day)
|
| 12:00 PM |
8:30 AM
(next day)
|
| 1:00 PM |
9:30 AM
(next day)
|
| 2:00 PM |
10:30 AM
(next day)
|
| 3:00 PM |
11:30 AM
(next day)
|
| 4:00 PM |
12:30 PM
(next day)
|
| 5:00 PM |
1:30 PM
(next day)
|
| 6:00 PM |
2:30 PM
(next day)
|
| 7:00 PM |
3:30 PM
(next day)
|
| 8:00 PM |
4:30 PM
(next day)
|
| 9:00 PM |
5:30 PM
(next day)
|
| 10:00 PM |
6:30 PM
(next day)
|
| 11:00 PM |
7:30 PM
(next day)
|
Timezone offsets and DST rules verified against the IANA Time Zone Database. Conversion math and business-hour overlap windows double-checked against real-world scheduling scenarios.
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Convert Other Time Zones to LHST
Find the time difference from any major zone into Lord Howe Standard Time. Use these pages when scheduling with Australia from a different region.