The short answer

12pm in Hawaii Time is 11pm in Irish Standard Time.

Hawaii Time is 11 hours behind Irish Standard Time. It lands deep outside working hours in Irish Standard Time — see the best time to meet below for a friendlier slot.

Hawaii Time
12pm
Irish Standard Time
11pm
Right now
11:33pmHST · UTC-10:00 · Sun, Jun 21
10:33amIST · UTC+01:00 · Mon, Jun 22
Read across to convert
Hawaii Time
HST · UTC-10:00
11:33pm ☾
Irish Standard Time
IST · UTC+01:00
10:33am ☀
Pinned12pmHawaii Time=11pmIrish Standard Time
12amSun
11am
WORK
1am
12pm
WORK
2am
1pm
WORK
3am
2pm
WORK
4am
3pm
WORK
5am
4pm
WORK
6am
5pm
7am
6pm
8am
7pm
9am
WORK
8pm
10am
WORK
9pm
11am
WORK
10pm
PINNED
12pm
WORK
11pm
1pm
WORK
12amMon ·+1d
2pm
WORK
1amMon ·+1d
3pm
WORK
2amMon ·+1d
4pm
WORK
3amMon ·+1d
5pm
4amMon ·+1d
6pm
5amMon ·+1d
7pm
6amMon ·+1d
8pm
7amMon ·+1d
9pm
8amMon ·+1d
10pm
9amMon ·+1d
WORK
NOW
11pm
10amMon ·+1d
WORK
daylightnightworking hoursoverlap
Best time to meet
Closest workable window
Just outside the working window — early on one side, late on the other.
Hawaii Time
7am–8am
=
Irish Standard Time
6pm–7pm
Popular conversions

Quick reference.

9amHawaii Time=8pmIrish Standard Time
12pmHawaii Time=11pmIrish Standard Time
3pmHawaii Time=2amIrish Standard Time · next day
5pmHawaii Time=4amIrish Standard Time · next day
9pmHawaii Time=8amIrish Standard Time · next day
In context

What each side covers.

Hawaii Time
HST · UTC-10:00
11:33pm

US

Irish Standard Time
IST · UTC+01:00
10:33am
Cities on this clock

Frequently asked

Quick answers about converting between Hawaii Time and Irish Standard Time. Can't find what you need? Email [email protected].

What is the time difference between Hawaii Time and Irish Standard Time?
Hawaii Time is 11 hours behind Irish Standard Time right now. We always show the live, daylight-saving-correct difference, so this figure already accounts for whichever side is observing summer time today.
When it's 12pm in Hawaii Time, what time is it in Irish Standard Time?
12pm in Hawaii Time is 11pm in Irish Standard Time. It lands deep outside working hours in Irish Standard Time — see the best time to meet below for a friendlier slot. Use the hour-by-hour table above to read any other time across.
What's the best time for a call between Hawaii Time and Irish Standard Time?
There's no comfortable 9-to-5 overlap between Hawaii Time and Irish Standard Time — they sit on opposite sides of the planet's working day. Plan for an early or late call on one side, or hand work off asynchronously.
Does this account for daylight saving time?
Yes. We track every clock change in both places, so the abbreviations you see — HST and IST — are the ones actually in effect right now, not a fixed all-year value. When either side changes its clocks, this page updates automatically.
Why is the date sometimes different on each side?
When two places are far enough apart, the same moment can fall on different calendar days. That is why some conversions are marked "previous day" or "next day" — it is the same instant in time, read off two clocks that crossed midnight at different points.