The short answer
10am in Mountain Standard Time is 7:30pm in Tehran.
Mountain Standard Time is 9 hours 30 minutes behind Tehran. That's already evening in Tehran, after the typical working day ends.
Mountain Standard Time☀
10am
Tehran☾
7:30pm
Right now
12:32amMDT · UTC-06:00 · Mon, Jun 22
10:02am+03:30 · UTC+03:30 · Mon, Jun 22
Read across to convert
Mountain Standard Time
MDT · UTC-06:00
Tehran
+03:30 · UTC+03:30
Pinned10amMountain Standard Time=7:30pmTehran
NOW
12amMon
9:30am
WORK1am
10:30am
WORK2am
11:30am
WORK3am
12:30pm
WORK4am
1:30pm
WORK5am
2:30pm
WORK6am
3:30pm
WORK7am
4:30pm
WORK8am
5:30pm
9am
WORK6:30pm
PINNED
10am
WORK7:30pm
11am
WORK8:30pm
12pm
WORK9:30pm
1pm
WORK10:30pm
2pm
WORK11:30pm
3pm
WORK12:30amTue ·+1d
4pm
WORK1:30amTue ·+1d
5pm
2:30amTue ·+1d
6pm
3:30amTue ·+1d
7pm
4:30amTue ·+1d
8pm
5:30amTue ·+1d
9pm
6:30amTue ·+1d
10pm
7:30amTue ·+1d
11pm
8:30amTue ·+1d
daylightnightworking hoursoverlap
Best time to meet=
Closest workable window
Just outside the working window — early on one side, late on the other.
Mountain Standard Time
7am–10am
Tehran
4:30pm–7:30pm
Popular conversions
Quick reference.
9amMountain Standard Time=6:30pmTehran
12pmMountain Standard Time=9:30pmTehran
3pmMountain Standard Time=12:30amTehran · next day
5pmMountain Standard Time=2:30amTehran · next day
9pmMountain Standard Time=6:30amTehran · next day
In context
What each side covers.
Mountain Standard Time
12:32amMDT · UTC-06:00
Cities on this clock
Related converters
Other popular pairs.
Pacific Time
11:32pm
India Standard Time
12:02pm
Pacific Time to India12 hours 30 minutes behind
Eastern Standard Time
2:32am
Central European Time
8:32am
Eastern Time to Central Europe6 hours behind
India Standard Time
12:02pm
Eastern Standard Time
2:32am
India to Eastern Time9 hours 30 minutes ahead
Greenwich Mean Time
7:32am
India Standard Time
12:02pm
London to India4 hours 30 minutes behind
Pacific Standard Time
11:32pm
Eastern Standard Time
2:32am
Pacific to Eastern Time3 hours behind
Central European Time
8:32am
India Standard Time
12:02pm
Central Europe to India3 hours 30 minutes behind
Frequently asked
Quick answers about converting between Mountain Standard Time and Tehran. Can't find what you need? Email [email protected].
- What is the time difference between Mountain Standard Time and Tehran?
- Mountain Standard Time is 9 hours 30 minutes behind Tehran 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 Mountain Standard Time, what time is it in Tehran?
- 10am in Mountain Standard Time is 7:30pm in Tehran. That's already evening in Tehran, after the typical working day ends. Use the hour-by-hour table above to read any other time across.
- What's the best time for a call between Mountain Standard Time and Tehran?
- There's no comfortable 9-to-5 overlap between Mountain Standard Time and Tehran — 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 — MDT and +03:30 — 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.