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TimezonePair
Home·Tehran·Tehran × Nukuʻalofa
Prime meridian·:: UTC·

Tehran×Nukuʻalofa

Iran · IR
Tehran
—:—
Asia/Tehran·
No DST
Tonga · TO
Nukuʻalofa
—:—
Pacific/Tongatapu·
No DST

Tehran is 9.5 hours ahead of Nukuʻalofa. Scrub a time, meet in the overlap, ship the invite — before the kettle boils.

◊ at a glance

Three numbers. The ones that decide the meeting.

01
Difference
9.5h ahead
Tehran vs Nukuʻalofa
02
Overlap
0h
Business hours 09:00 – 17:00
03
UTC offsets
GMT+3:30 / GMT+13
Tehran · Tongatapu
04
Flight
18h 25m
15,230 km · great-circle, non-stop cruise
◊ the overlap

When the world meets at work.

24-hour overlap
No overlap in working hours
Tehran
—:—
0
3
6
9
12
15
18
21
Nukuʻalofa
—:—
Scrub a meeting time14:00 Tehran
Same moment in Nukuʻalofa23:30 Nukuʻalofa
◊ hour by hour

Read the day in both zones.

Share this meeting
timezonepair.com/from/tehran/to/nukuʻalofa?t=14&a=A&d=2026-05-26&dur=60
14:00 Tehran23:30 Nukuʻalofa
Full 24-hour reference
TehranNukuʻalofa
00:00
09:00Nukuʻalofa only
01:00
10:00Nukuʻalofa only
02:00
11:00Nukuʻalofa only
03:00
12:00Nukuʻalofa only
04:00
13:00Nukuʻalofa only
05:00
14:00Nukuʻalofa only
06:00
15:00Nukuʻalofa only
07:00
16:00Nukuʻalofa only
08:00
17:00
09:00Tehran only
18:00
10:00Tehran only
19:00
11:00Tehran only
20:00
12:00Tehran only
21:00
13:00Tehran only
22:00
14:00Tehran only
23:00
15:00Tehran only
00:00
16:00Tehran only
01:00
17:00
02:00
18:00
03:00
19:00
04:00
20:00
05:00
21:00
06:00
22:00
07:00
23:00
08:00
◊ travel essentials

Crossing the border. Money, language, plugs.

Money changes hands at the border: Tehran uses the IRR (﷼) and Nukuʻalofa uses the TOP (T$). Language shifts too — Persian (Farsi) in Tehran, English in Nukuʻalofa. Be careful behind the wheel: Tehran drives on the right, Nukuʻalofa on the left.

Tehran
Country
Iran
Capital
Tehran
Currency
Iranian rial (IRR · ﷼)
Language
Persian (Farsi)
Calling code
+98
Drives on
Right
Nukuʻalofa
Country
Tonga
Capital
Nuku'alofa
Currency
Tongan paʻanga (TOP · T$)
Language
English, Tongan
Calling code
+676
Drives on
Left
◊ common questions

Quick answers. Before you book the call.

What's the time difference between Tehran and Nukuʻalofa?

Tehran is 9.5 hours ahead of Nukuʻalofa. Tehran runs on GMT+3:30 and Nukuʻalofa on GMT+13. The gap can shift by an hour when either side enters or leaves daylight saving — the live clocks above always reflect the current offset.

When's the best time to schedule a meeting?

Standard 09:00–17:00 workdays don't intersect. Most teams compromise with one side meeting early (before 09:00) or late (after 17:00).

Does daylight saving time change the difference?

Yes, if either city observes DST. When one side shifts and the other doesn't, the gap changes by one hour. The DST badges under each clock show whether each zone is currently shifted and when the next transition lands.

How far is Tehran from Nukuʻalofa?

About 15,230 km as the crow flies (great-circle distance). A non-stop commercial flight cruises that in roughly 18h 25m, not counting airport time, winds, or routing around restricted airspace.

Can I send this meeting time as a calendar invite?

Yes. Pick a time on the slider above, open the meeting card, customize the title and duration, then download the .ics file. It imports cleanly into Google Calendar, Outlook, and Apple Calendar with the correct timezone attached.

What currency do Tehran and Nukuʻalofa use?

Tehran uses the Iranian rial (IRR, ﷼); Nukuʻalofa uses the Tongan paʻanga (TOP, T$). Check the live rate before transferring money or paying with a card abroad — most banks add a 1–3 % FX margin on top of the mid-market rate.

How do I call Tehran from Nukuʻalofa?

Dial the international prefix used by your carrier (often 00), then +98, then the local number — drop any leading zero of the city or mobile code. For free calls, WhatsApp, Signal, and FaceTime work over Wi-Fi regardless of country code.

What language is spoken in Tehran and Nukuʻalofa?

Tehran primarily speaks Persian (Farsi); Nukuʻalofa speaks English, Tongan. English is widely used in business contexts in major cities of both, but written contracts may need translation.

Do Tehran and Nukuʻalofa drive on the same side of the road?

No. Iran drives on the right, Tonga on the left. If you're renting, expect a learning curve on the first day — especially at roundabouts and when judging the centre of the lane.

◊ keep going

One pair down. 299 cities to go.

Every pair in 300 cities runs the same clocks, the same overlap, the same one-click invite. Pick another.

TEHRAN · Asia/Tehran
GMT+3:30 · 35.69°, 51.39°

NUKUʻALOFA · Pacific/Tongatapu
GMT+13 · -21.14°, -175.21°

0h shared · 9.5h ahead