The short answer

10am in Tehran is 7:30am in Irish Standard Time.

Tehran is 2 hours 30 minutes ahead of Irish Standard Time. That's early morning in Irish Standard Time, before the typical working day begins.

Tehran
10am
Irish Standard Time
7:30am
Right now
7:10am+03:30 · UTC+03:30 · Sat, Jun 27
4:40amIST · UTC+01:00 · Sat, Jun 27
Read across to convert
Tehran
+03:30 · UTC+03:30
7:10am ☀
Irish Standard Time
IST · UTC+01:00
4:40am ☾
Pinned10amTehran=7:30amIrish Standard Time
12amSat
9:30pmFri ·−1d
1am
10:30pmFri ·−1d
2am
11:30pmFri ·−1d
3am
12:30amSat
4am
1:30am
5am
2:30am
6am
3:30am
NOW
7am
4:30am
8am
5:30am
9am
WORK
6:30am
PINNED
10am
WORK
7:30am
11am
WORK
8:30am
12pm
WORK
9:30am
WORK
1pm
WORK
10:30am
WORK
2pm
WORK
11:30am
WORK
3pm
WORK
12:30pm
WORK
4pm
WORK
1:30pm
WORK
5pm
2:30pm
WORK
6pm
3:30pm
WORK
7pm
4:30pm
WORK
8pm
5:30pm
9pm
6:30pm
10pm
7:30pm
11pm
8:30pm
daylightnightworking hoursoverlap
Best time to meet
Best for a call
Tehran
12pm–5pm
=
Irish Standard Time
9:30am–2:30pm
Popular conversions

Quick reference.

9amTehran=6:30amIrish Standard Time
12pmTehran=9:30amIrish Standard Time
3pmTehran=12:30pmIrish Standard Time
5pmTehran=2:30pmIrish Standard Time
9pmTehran=6:30pmIrish Standard Time
In context

What each side covers.

Tehran
+03:30 · UTC+03:30
7:10am
Cities on this clock
Irish Standard Time
IST · UTC+01:00
4:40am
Cities on this clock

Frequently asked

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

What is the time difference between Tehran and Irish Standard Time?
Tehran is 2 hours 30 minutes ahead of 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 10am in Tehran, what time is it in Irish Standard Time?
10am in Tehran is 7:30am in Irish Standard Time. That's early morning in Irish Standard Time, before the typical working day begins. Use the hour-by-hour table above to read any other time across.
What's the best time for a call between Tehran and Irish Standard Time?
12pm–5pm in Tehran lines up with 9:30am–2:30pm in Irish Standard Time — both sides are inside a 9-to-5 working day.
Does this account for daylight saving time?
Yes. We track every clock change in both places, so the abbreviations you see — +03:30 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.