ACST to LHDT Converter
LHDT is not used on September 26, 2026
This converter uses LHST for Lord Howe Island.
Quick answers
Selected conversion
The selected date and time will appear here when the converter loads.
ACST and LHDT examples
These examples always use ACST (UTC+9:30) and LHDT (UTC+11). They stay the same when you change the date or time above. The selected conversion may differ when daylight saving time applies.
ACST is 1 hour and 30 minutes behind LHDT.
How the time difference changes
Depending on seasonal clock changes, ACST is 1 hour behind LHST or ACST is 1 hour and 30 minutes behind LHDT.
Depending on seasonal clock changes, working hours of 9:00 am to 5:00 pm in ACST correspond to 10:00 am to 6:00 pm in LHST or working hours of 9:00 am to 5:00 pm in ACST correspond to 10:30 am to 6:30 pm in LHDT.
Compare ACST time with LHDT time, including current local time, UTC offsets, time difference, daylight saving changes, working hours, and shareable meeting times.
Time Difference
Australian Central Standard Time is 1 hour behind Lord Howe Standard Time
7:30 am07:30 in ACST is 8:30 am08:30 in LHST
ACST to LHST call time
Best time for a conference call or a meeting is between 9am-4pm in ACST which corresponds to 10am-5pm in LHST
7:30 am07:30 Australian Central Standard Time (ACST). Offset UTC +9:30 hours
8:30 am08:30 Lord Howe Standard Time (LHST). Offset UTC +10:30 hours
7:30 am07:30 ACST / 8:30 am08:30 LHST
| ACST | LHST |
|---|---|
| 12am (midnight) | 1am |
| 1am | 2am |
| 2am | 3am |
| 3am | 4am |
| 4am | 5am |
| 5am | 6am |
| 6am | 7am |
| 7am | 8am |
| 8am | 9am |
| 9am | 10am |
| 10am | 11am |
| 11am | 12pm (noon) |
| 12pm (noon) | 1pm |
| 1pm | 2pm |
| 2pm | 3pm |
| 3pm | 4pm |
| 4pm | 5pm |
| 5pm | 6pm |
| 6pm | 7pm |
| 7pm | 8pm |
| 8pm | 9pm |
| 9pm | 10pm |
| 10pm | 11pm |
| 11pm | 12am (midnight) |
| 00:00 | 01:00 |
| 01:00 | 02:00 |
| 02:00 | 03:00 |
| 03:00 | 04:00 |
| 04:00 | 05:00 |
| 05:00 | 06:00 |
| 06:00 | 07:00 |
| 07:00 | 08:00 |
| 08:00 | 09:00 |
| 09:00 | 10:00 |
| 10:00 | 11:00 |
| 11:00 | 12:00 |
| 12:00 | 13:00 |
| 13:00 | 14:00 |
| 14:00 | 15:00 |
| 15:00 | 16:00 |
| 16:00 | 17:00 |
| 17:00 | 18:00 |
| 18:00 | 19:00 |
| 19:00 | 20:00 |
| 20:00 | 21:00 |
| 21:00 | 22:00 |
| 22:00 | 23:00 |
| 23:00 | 00:00 |
Australian Central Standard Time
Offset: ACST is 9 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 ACST time zone is Adelaide in Australia, with about 1.469 million people. Other major cities in this time zone include Darwin, Adelaide Hills, Palmerston, Alice Springs.
Daylight Saving: This is a standard time zone. During summer, some places set clocks forward one hour for daylight saving time and observe Australian Central Daylight Time (ACDT).
Start: Australian Central Standard Time (ACST) started 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. Standard time starts annually on the first Sunday of April.
End: Australian Central Standard Time (ACST) ends 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 local daylight time instead. Standard time ends annually on the first Sunday of October.
ACST representations, usage and related time zones
- +0930 - basic
- +09:30 - extended
- +0930 - sign character (+) followed by a four digit time providing hours (09) and minutes (30) of the offset. Indicates an offset of nine hours and thirty minutes to the east of the zero meridian.
- Australia/Adelaide
- Australia/Broken_Hill
- Australia/Darwin
- Australia/North
- Australia/South
- Australia/Yancowinna
Lord Howe Daylight Time
Offset: LHDT is 11 hours ahead Greenwich Mean Time (GMT) and is used in Australia
Daylight Saving: Lord Howe Daylight Time (LHDT) is a daylight saving/summer time zone, but some places set clocks back one hour during winter and observe Lord Howe Standard Time (LHST).
End: Lord Howe Daylight Time (LHDT) ended 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 local standard time instead. Daylight saving ends annually on the first Sunday of April
Start: Lord Howe Daylight Time (LHDT) starts 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. Daylight saving starts annually on the first Sunday of October
LHDT representations, usage and related time zones
- +11 - basic short
- +1100 - basic
- +11:00 - extended
- +1100 - sign character (+) followed by a four digit time providing hours (11) and minutes (00) of the offset. Indicates an offset of eleven hours to the east of the zero meridian.
- Lima - Military abbreviation for LHDT
- L - short form of 'Lima'
- AEDT - Australian Eastern Daylight Time
- BST - Bougainville Standard Time
- KOST - Kosrae Time
- L - Lima Time Zone
- LHDT - Lord Howe Daylight Time
- MAGT - Magadan Time
- NCT - New Caledonia Time
- NFT - Norfolk Time
- PETT - Kamchatka Time
- PONT - Pohnpei Standard Time
- SBT - Solomon IslandsTime
- VLAST - Vladivostok Summer Time
- VUT - Vanuatu Time