Offset
The time difference between Lord Howe Time and Argentina Time is 13.5 hours.
Lord Howe Time (LHST) is ahead of Argentina Time (ART).
LHST: UTC+10:30
ART: UTC-3
Neither Lord Howe Time nor Argentina Time is currently observing daylight saving time.
When to schedule
Standard business hours (9 AM–5 PM, Mon–Fri) in Lord Howe Time and Argentina Time don't overlap on the same weekday. Argentina Time is 13 hours behind Lord Howe Time.
Realistic options: hand off asynchronously, or stretch one side by an hour to catch the other team at the start or end of their day.
This window may shift by an hour during daylight saving time.
Public holidays in 2026
National public holidays can affect availability — a counterpart is likely off work on their own holidays, so it's worth planning meetings and deadlines around them.
Australia
- New Year's DayThu, Jan 1
- Australia DayMon, Jan 26
- Good FridayFri, Apr 3
- Easter MondayMon, Apr 6
- Christmas DayFri, Dec 25
- St. Stephen's DayMon, Dec 28
Argentina
- New Year's DayThu, Jan 1
- CarnivalMon, Feb 16
- CarnivalTue, Feb 17
- Day of Remembrance for Truth and JusticeTue, Mar 24
- Day of the Veterans and Fallen of the Malvinas WarThu, Apr 2
- Good FridayFri, Apr 3
- Labour DayFri, May 1
- May RevolutionMon, May 25
- Anniversary of the Passing of General Martín Miguel de GüemesMon, Jun 15
- General Manuel Belgrano Memorial DaySat, Jun 20
- Independence DayThu, Jul 9
- General José de San Martín Memorial DayMon, Aug 17
- Day of Respect for Cultural DiversityMon, Oct 12
- National Sovereignty DayMon, Nov 23
- Immaculate Conception DayTue, Dec 8
- Christmas DayFri, Dec 25
About these zones
Lord Howe Time is also known as LHST, or LHDT. To call Australia, dial +61.
Argentina Time is also known as ART. To call Argentina, dial +54.
Argentina Time is approximately 7,250 miles southeast of Lord Howe Time.
Quick reference
Full 24-hour conversion table — tap any time to open it in the converter.
| LHST | ART | Day |
|---|---|---|
| 12:00 am | 10:30 am | -1 day |
| 1:00 am | 11:30 am | -1 day |
| 2:00 am | 12:30 pm | -1 day |
| 3:00 am | 1:30 pm | -1 day |
| 4:00 am | 2:30 pm | -1 day |
| 5:00 am | 3:30 pm | -1 day |
| 6:00 am | 4:30 pm | -1 day |
| 7:00 am | 5:30 pm | -1 day |
| 8:00 am | 6:30 pm | -1 day |
| 9:00 am | 7:30 pm | -1 day |
| 10:00 am | 8:30 pm | -1 day |
| 11:00 am | 9:30 pm | -1 day |
| 12:00 pm | 10:30 pm | -1 day |
| 1:00 pm | 11:30 pm | -1 day |
| 2:00 pm | 12:30 am | Same day |
| 3:00 pm | 1:30 am | Same day |
| 4:00 pm | 2:30 am | Same day |
| 5:00 pm | 3:30 am | Same day |
| 6:00 pm | 4:30 am | Same day |
| 7:00 pm | 5:30 am | Same day |
| 8:00 pm | 6:30 am | Same day |
| 9:00 pm | 7:30 am | Same day |
| 10:00 pm | 8:30 am | Same day |
| 11:00 pm | 9:30 am | Same day |
Daylight saving time
Lord Howe Time observes daylight saving time; Argentina Time does not. The offset between the two zones changes when Lord Howe Time transitions: on Sunday, October 4, 2026, clocks spring forward from LHST to LHDT.
See the daylight saving time page for transition dates across every time zone.
Daylight today
- Sunrise
- 6:47 AM
- Sunset
- 4:59 PM
- Day length
- 10h 11m
- Sunrise
- 7:55 AM
- Sunset
- 5:51 PM
- Day length
- 9h 56m
Cities in these zones
Cities in Argentina Time
Browse all cities to see the current local time anywhere.
Airports in these zones
Airports in Argentina Time
- AEP
- EZE
Related conversions
Common conversions
- What is 9:00 am LHST in ART?
- 9:00 am LHST is 7:30 pm ART, the previous day.
- What is 12:00 pm LHST in ART?
- 12:00 pm LHST is 10:30 pm ART, the previous day.
- What is 12:30 pm LHST in ART?
- 12:30 pm LHST is 11:00 pm ART, the previous day.
- What is 2:00 pm LHST in ART?
- 2:00 pm LHST is 12:30 am ART.
- What is 5:00 pm LHST in ART?
- 5:00 pm LHST is 3:30 am ART.
- What is 11:30 pm LHST in ART?
- 11:30 pm LHST is 10:00 am ART.