Time zone · Oceania
LHDT
Lord Howe Daylight Time
Lord Howe Daylight Time (LHDT) covers the unique time observed on Lord Howe Island, Australia, famous for its half‑hour offset and 30‑minute seasonal clock changes—a quirk that residents and visitors alike must keep in mind for flights, tours and online bookings.
Thursday, October 15, 2026
Current offset
UTC+11:00
Daylight · +11
Daylight saving
Active
Reverts 4 Apr 2027
IANA zones
1
1 observe DST, 0 don't
DST offset
—
No summer variant
About LHDT
Standard time, with a summer shift.
Lord Howe Daylight Time (LHDT) covers the unique time observed on Lord Howe Island, Australia, famous for its half‑hour offset and 30‑minute seasonal clock changes—a quirk that residents and visitors alike must keep in mind for flights, tours and online bookings.
IANA zones · the technical identifiers
The zone that resolve to LHDT.
For software, always store the IANA identifier — never the abbreviation alone. The database keeps these zones distinct because their rules can, and historically did, diverge.
Where LHDT is used
One country.
Same offset · UTC+11:00
Other zones at UTC+11:00 right now.
These named zones share LHDT's offset today. When daylight saving rules differ, they drift apart for part of the year.
Convert
LHDT to the world's clocks.
Frequently asked questions
Common questions about LHDT, daylight saving, and how to handle it in software. Can't find what you need? Email [email protected].
- Why does Lord Howe Island use a half‑hour offset instead of a full hour?
- Lord Howe is one of the few places in the world that sits on a 30‑minute UTC offset, half an hour ahead of Australian Eastern Standard Time (UTC+10:00), which suits the island's position about 600 km east of the mainland.
- How does daylight saving work on Lord Howe Island?
- Clocks shift forward or backward by just 30 minutes rather than the more common 1‑hour change, making it one of the shortest DST adjustments in the world.
- When do the clocks change on Lord Howe Island?
- Lord Howe moves its clocks forward half an hour at 2:00 a.m. on the first Sunday in October and back half an hour at 2:00 a.m. on the first Sunday in April.
- Is Lord Howe on standard time all year?
- No – Lord Howe Island uses UTC+10:30 from April to October and UTC+11:00 during daylight saving time, from October to April.
- Does this timezone affect the rest of Australia?
- Only Lord Howe Island uses LHDT/LHST; the rest of Australia follows Australian Eastern, Central or Western time.
- Is Lord Howe Daylight Time the same as Australian Eastern Time?
- No. LHDT (UTC+11:00) is an hour ahead of Australian Eastern Standard Time, but it matches Australian Eastern Daylight Time, which Sydney keeps over the same October–April period.
- What nearby regions share a similar time to Lord Howe?
- Lord Howe has no close neighbours with its exact half‑hour offset, so local businesses often coordinate times with Australian mainland cities like Sydney or Brisbane.
- Why is Lord Howe Island famous?
- Besides its unusual clock, Lord Howe is a UNESCO World Heritage Site known for dramatic marine life and striking volcanic peaks, attracting scientists and tourists.
Source: IANA tzdb2026d · Reviewed
Free · Developer API
This time zone, as JSON.
Its defining offset, DST status and member counts, from one endpoint.
Also in the API: time zones by coordinates, conversions that flag daylight saving gaps, and abbreviations decoded.
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