LHST to ACDT Converter
ACDT is not used on this date
This converter uses ACST (GMT +9:30), the offset Adelaide uses on this date. Open the ACST converter.Quick answers
Selected conversion
The selected date and time will appear here when the converter loads.
LHST and ACDT examples
These examples always use LHST (UTC+10:30) and ACDT (UTC+10:30). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.
LHST and ACDT have the same local time.
How the time difference changes
Depending on seasonal clock changes, LHDT is 30 minutes ahead of ACDT or LHST is 1 hour ahead of ACST. Briefly around clock changes, LHST and ACDT have the same time or LHDT is 1 hour and 30 minutes ahead of ACST.
Depending on seasonal clock changes, working hours of 9:00 am to 5:00 pm in LHDT correspond to 8:30 am to 4:30 pm in ACDT or working hours of 9:00 am to 5:00 pm in LHST correspond to 8:00 am to 4:00 pm in ACST.
Compare LHST time with ACDT time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
Lord Howe Standard Time is 1 hour ahead of Australian Central Standard Time
9:30 am09:30 in LHST is 8:30 am08:30 in ACST
LHST to ACST call time
Best time for a conference call or a meeting is between 10am-5pm in LHST which corresponds to 9am-4pm in ACST
9:30 am09:30 Lord Howe Standard Time (LHST). Offset UTC +10:30 hours
8:30 am08:30 Australian Central Standard Time (ACST). Offset UTC +9:30 hours
9:30 am09:30 LHST / 8:30 am08:30 ACST
| LHST | ACST |
|---|---|
| 12am (midnight) | 11pm |
| 1am | 12am (midnight) |
| 2am | 1am |
| 3am | 2am |
| 4am | 3am |
| 5am | 4am |
| 6am | 5am |
| 7am | 6am |
| 8am | 7am |
| 9am | 8am |
| 10am | 9am |
| 11am | 10am |
| 12pm (noon) | 11am |
| 1pm | 12pm (noon) |
| 2pm | 1pm |
| 3pm | 2pm |
| 4pm | 3pm |
| 5pm | 4pm |
| 6pm | 5pm |
| 7pm | 6pm |
| 8pm | 7pm |
| 9pm | 8pm |
| 10pm | 9pm |
| 11pm | 10pm |
| 00:00 | 23:00 |
| 01:00 | 00:00 |
| 02:00 | 01:00 |
| 03:00 | 02:00 |
| 04:00 | 03:00 |
| 05:00 | 04:00 |
| 06:00 | 05:00 |
| 07:00 | 06:00 |
| 08:00 | 07:00 |
| 09:00 | 08:00 |
| 10:00 | 09:00 |
| 11:00 | 10:00 |
| 12:00 | 11:00 |
| 13:00 | 12:00 |
| 14:00 | 13:00 |
| 15:00 | 14:00 |
| 16:00 | 15:00 |
| 17:00 | 16:00 |
| 18:00 | 17:00 |
| 19:00 | 18:00 |
| 20:00 | 19:00 |
| 21:00 | 20:00 |
| 22:00 | 21:00 |
| 23:00 | 22:00 |
Lord Howe Standard Time
Offset: LHST is 10 hours and 30 minutes ahead Greenwich Mean Time (GMT) and is used in Australia
Countries using this time zone: Australia
Daylight Saving: This is a standard time zone. During summer, some places set clocks forward one hour for daylight saving time and observe Lord Howe Daylight Time (LHDT).
Start: Lord Howe Standard Time (LHST) started on Sunday, April 5, 2026 at 2:00 am local time and clocks were set one hour back to Sunday, April 5, 2026, 1:30 am. Standard time starts annually on the first Sunday of April.
End: Lord Howe Standard Time (LHST) ends on Sunday, October 4, 2026 at 2:00 am local time and clocks are set one hour forward to Sunday, October 4, 2026, 2:30 am local daylight time instead. Standard time ends annually on the first Sunday of October.
LHST representations, usage and related time zones
- +1030 - basic
- +10:30 - extended
- +1030 - sign character (+) followed by a four digit time providing hours (10) and minutes (30) of the offset. Indicates an offset of ten hours and thirty minutes to the east of the zero meridian.
- ACDT - Australian Central Daylight Time
- LHST - Lord Howe Standard Time
Australian Central Daylight Time
Offset: ACDT is 10 hours and 30 minutes ahead Greenwich Mean Time (GMT) and is used in Australia
Countries using this time zone: Australia
Principal Cities: The largest city in the ACDT time zone is Adelaide in Australia, with about 1.469 million people. Other major cities in this time zone include Adelaide Hills, Mount Gambier, Morphett Vale, Broken Hill.
Daylight Saving: Australian Central Daylight Time (ACDT) is a daylight saving/summer time zone, but some places set clocks back one hour during winter and observe Australian Central Standard Time (ACST).
End: Australian Central Daylight Time (ACDT) ended on Sunday, April 5, 2026 at 3:00 am local time and clocks were set one hour back to Sunday, April 5, 2026, 2:00 am local standard time instead. Daylight saving ends annually on the first Sunday of April
Start: Australian Central Daylight Time (ACDT) starts on Sunday, October 4, 2026 at 2:00 am local time and clocks are set one hour forward to Sunday, October 4, 2026, 3:00 am. Daylight saving starts annually on the first Sunday of October
ACDT representations, usage and related time zones
- +1030 - basic
- +10:30 - extended
- +1030 - sign character (+) followed by a four digit time providing hours (10) and minutes (30) of the offset. Indicates an offset of ten hours and thirty minutes to the east of the zero meridian.
- Australia/Adelaide
- Australia/Broken_Hill
- Australia/South
- Australia/Yancowinna
- ACDT - Australian Central Daylight Time
- LHST - Lord Howe Standard Time