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LHDT to ACDT Converter

LHST/LHDT
Lord Howe Standard Time
GMT +10:30
12am
3am
6am
9am
12pm
3pm
6pm
9pm
LHDT is not used on May 30, 2026

This converter uses LHST for Lord Howe Island.

Keep LHDT (GMT +11)
ACST/ACDT
Australian Central Standard Time
GMT +9:30
12am
3am
6am
9am
12pm
3pm
6pm
9pm
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.

Compare LHDT 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
1:30 am01:30 in LHST is 12:30 am00:30 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

1:30 am01:30 Lord Howe Standard Time (LHST). Offset UTC +10:30 hours
12:30 am00:30 Australian Central Standard Time (ACST). Offset UTC +9:30 hours

1:30 am01:30 LHST / 12:30 am00:30 ACST

LHSTACST
12am (midnight)11pm
1am12am (midnight)
2am1am
3am2am
4am3am
5am4am
6am5am
7am6am
8am7am
9am8am
10am9am
11am10am
12pm (noon)11am
1pm12pm (noon)
2pm1pm
3pm2pm
4pm3pm
5pm4pm
6pm5pm
7pm6pm
8pm7pm
9pm8pm
10pm9pm
11pm10pm
00:0023:00
01:0000:00
02:0001:00
03:0002:00
04:0003:00
05:0004:00
06:0005:00
07:0006:00
08:0007:00
09:0008:00
10:0009:00
11:0010:00
12:0011:00
13:0012:00
14:0013:00
15:0014:00
16:0015:00
17:0016:00
18:0017:00
19:0018:00
20:0019:00
21:0020:00
22:0021:00
23:0022:00

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

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +11 - basic short
  • +1100 - basic
  • +11:00 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +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.
Military/NATO: Used by the U.S. military, Chinese military and others
  • Lima - Military abbreviation for LHDT
  • L - short form of 'Lima'
Time zones with the GMT +11 offset:
  • 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

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 1.225 million people. Other major cities in this time zone include Adelaide Hills, Mount Gambier, Morphett Vale, Prospect.

ACDT Time Zone Geo Map
ACDT timezone map

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).

Daylight saving time clock moves forward for one hour from 3am to 4amEnd: 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

Daylight saving time clock moves back for one hour from 2am to 1amStart: 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

W3C/ISO-8601: International standard covering representation and exchange of dates and time-related data
  • +1030 - basic
  • +10:30 - extended
Email/RFC-2822: Internet Message Format Date Standard, typically used for timestamps in email headers
  • +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.
IANA/Olson: Reflects ACDT time zone boundaries defined by political bodies, primarily intended for use with computer programs and operating systems
  • Australia/Adelaide
  • Australia/Broken_Hill
  • Australia/South
  • Australia/Yancowinna
Time zones with the GMT +10:30 offset:
  • ACDT - Australian Central Daylight Time
  • LHST - Lord Howe Standard Time
EST to ISTGMT to ESTPST to ESTEST to GMTPST to GMT