Current Time in IANA Australia/Lord_Howe Timezone
IANA Name: Australia/Lord_Howe
Standard Offset: UTC +10:30
Daylight Saving: Yes
DST Offset: UTC +11:00
DST Abbreviation: GMT+11
Currently Observing DST: No ❌
Australia/Lord_Howe: The World's Only Half-Hour DST Zone
Australia/Lord_Howe is the IANA time zone for Lord Howe Island, a tiny volcanic crescent in the Tasman Sea, part of New South Wales, Australia. It is unique worldwide for combining a half-hour standard offset (UTC+10:30) with a half-hour daylight saving shift to UTC+11, creating a 30-minute DST jump. This zone applies only to Lord Howe Island and its surrounding islets, covering about 400 permanent residents and a small number of tourists. Its offset and DST behavior are tailored to the island's remote location and latitude.
Where and Who Uses Australia/Lord_Howe
Australia/Lord_Howe is the sole time zone for Lord Howe Island (31°33′S 159°05′E), an UNESCO World Heritage site. The island is administered by the Lord Howe Island Board under New South Wales. No other Australian territory uses this zone. The entire population of roughly 400 people, plus seasonal visitors, follows this time. Businesses, schools, and government services on the island operate on this unique schedule.
Offset and Abbreviation
Standard time is UTC+10:30, known as Lord Howe Standard Time (LHST). During daylight saving, clocks advance to UTC+11:00, called Lord Howe Daylight Time (LHDT). The half-hour offset places Lord Howe 30 minutes ahead of the Australian Eastern Standard Time (AEST, UTC+10) zones like Sydney and Melbourne, and 30 minutes behind Adelaide (UTC+9:30 standard). LHST and LHDT are not widely used abbreviations but are recognized in timekeeping contexts.
Daylight Saving Rhythm
Lord Howe Island observes daylight saving time, but with a 30-minute shift instead of the typical 60 minutes. Clocks spring forward from LHST (UTC+10:30) to LHDT (UTC+11) on the first Sunday of October at 02:00 LHST (becoming 02:30 LHDT). They fall back on the first Sunday of April at 02:00 LHDT (becoming 01:30 LHST). This pattern matches the NSW DST schedule but with a half-hour adjustment. Upcoming dates: 2025-04-06 (fall back to +1030), 2025-10-05 (spring forward to +11), 2026-04-05 (fall back), 2026-10-04 (spring forward). The half-hour shift is unique; all other Australian DST zones shift by one hour.
Main Countries and Cities
The only territory using Australia/Lord_Howe is Lord Howe Island, Australia. The anchor city is Lord Howe (the main settlement). Other IANA zones at the same standard offset (UTC+10:30) are Australia/Adelaide and Australia/Broken_Hill, but those use a full one-hour DST shift to UTC+11:30. Thus, during DST, Lord Howe is 30 minutes behind Adelaide and Broken Hill.
Practical Guidance for Scheduling
When scheduling calls or meetings with Lord Howe Island, note the half-hour offset. During standard time (LHST, UTC+10:30):
- Sydney/Melbourne (AEST, UTC+10): Lord Howe is 30 minutes ahead. Example: 09:00 Sydney = 09:30 Lord Howe.
- Adelaide (ACST, UTC+9:30): Same time as Lord Howe (both UTC+10:30).
- Tokyo (JST, UTC+9): Lord Howe is 1.5 hours ahead.
- London (GMT, UTC+0): Lord Howe is 10.5 hours ahead.
During DST (LHDT, UTC+11):
- Sydney/Melbourne (AEDT, UTC+11): Same time as Lord Howe.
- Adelaide (ACDT, UTC+10:30): Lord Howe is 30 minutes ahead.
- Tokyo (JST, UTC+9): Lord Howe is 2 hours ahead.
- London (BST, UTC+1): Lord Howe is 10 hours ahead.
Business hours on Lord Howe typically run from 08:30 to 17:00 LHST/LHDT. The best overlap with US East Coast (EST/EDT) is limited; during standard time, 08:00 Lord Howe = 17:30 US Eastern (previous day) in winter, and during DST, 08:00 Lord Howe = 17:00 US Eastern (previous day).
Frequently Asked Questions
Why does Lord Howe Island use a half-hour offset?
Lord Howe Island is geographically located near the 159°E meridian, which is 10 hours and 36 minutes ahead of UTC. For convenience, the standard offset was rounded to UTC+10:30, and daylight saving was set to a half-hour shift to align with New South Wales DST while maintaining a unique local time.
Is Lord Howe Island the only place with a 30-minute DST shift?
Yes, Lord Howe Island is the only jurisdiction in the world that uses a 30-minute DST shift. All other locations that observe DST change by one hour (or, in rare cases, do not observe DST at all).
How can I convert Lord Howe time to my local time?
Use a reliable world clock or time zone converter. During standard time (LHST, UTC+10:30), add 10.5 hours to UTC. During daylight time (LHDT, UTC+11), add 11 hours. For example, if it is 12:00 UTC, it is 22:30 LHST or 23:00 LHDT.
Does Lord Howe Island observe DST at the same time as mainland Australia?
Yes, the start and end dates match the New South Wales DST schedule: first Sunday of October (spring forward) and first Sunday of April (fall back). However, the time change is only 30 minutes instead of one hour.
What is the abbreviation for Lord Howe time?
Standard time is abbreviated as LHST (Lord Howe Standard Time) and daylight time as LHDT (Lord Howe Daylight Time). These are not official IANA abbreviations but are commonly used.
Can I visit Lord Howe Island and experience the time change?
Yes, if you visit during the DST transition periods (early April or early October), you will experience a 30-minute clock change. The island is accessible by plane from Sydney or Port Macquarie.