What is the time difference between Phoenix and Tehran?

Tehran is 10 hours 30 minutes ahead of Phoenix during standard time.

When is the best time to schedule a call between Phoenix and Tehran?

There is no standard business-hours overlap between Phoenix and Tehran. The closest window is around 7:00 AM MST / 5:00 PM GMT+3:30.

Phoenix to Tehran Time Converter — MST to GMT+3:30, 10 hours 30 minutes difference

24-Hour Overlap Timeline

❌ No business-hours overlap between Phoenix and Tehran (9–18 local)

	0	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23
UTC →
🇺🇸 Phoenix UTC-7	5p	6p	7p	8p	9p	10p	11p	12a	1a	2a	3a	4a	5a	6a	7a	8a	9a	10a	11a	12p	1p	2p	3p	4p
🇮🇷 Tehran UTC+3:30	3a	4a	5a	6a	7a	8a	9a	10a	11a	12p	1p	2p	3p	4p	5p	6p	7p	8p	9p	10p	11p	12a	1a	2a
🇮🇳 India (IST) UTC+5:30	5a	6a	7a	8a	9a	10a	11a	12p	1p	2p	3p	4p	5p	6p	7p	8p	9p	10p	11p	12a	1a	2a	3a	4a

Both working Working Off hours Sleeping Now

Key Facts: Phoenix (MST) vs Tehran (GMT+3:30)

Time Gap

10h 30m

Tehran ahead

DST Status

✅ Phoenix

No DST

✅ Tehran: No DST

Cities in MST

48

Largest: Phoenix

4,065,338 pop.

Overlap Window

None

No work-hour overlap

Consider early/late meetings

Find Cities in Phoenix & Tehran Timezones

The MST and GMT+3:30 timezones are separated by 10 hours 30 minutes. Phoenix is the largest city in the America/Phoenix zone and Tehran is the largest in Asia/Tehran. Neither timezone observes daylight saving time, so the difference is constant year-round. For scheduling between these regions, the key fact is: there is no comfortable overlap during standard business hours.

Best Times to Schedule Calls: Phoenix (MST) ↔ Tehran (GMT+3:30)

Phoenix (MST)	Tehran (GMT+3:30)	Quality
12:00 AM	10:00 AM	❌
1:00 AM	11:00 AM	❌
2:00 AM	12:00 PM	❌
3:00 AM	1:00 PM	❌
4:00 AM	2:00 PM	❌
5:00 AM	3:00 PM	❌
6:00 AM	4:00 PM	❌
7:00 AM	5:00 PM	⚠️
8:00 AM	6:00 PM	⚠️
9:00 AM	7:00 PM	⚠️
10:00 AM	8:00 PM	❌
11:00 AM	9:00 PM	❌
12:00 PM	10:00 PM	❌
1:00 PM	11:00 PM	❌
2:00 PM	12:00 AM +1 day	❌
3:00 PM	1:00 AM +1 day	❌
4:00 PM	2:00 AM +1 day	❌
5:00 PM	3:00 AM +1 day	❌
6:00 PM	4:00 AM +1 day	❌
7:00 PM	5:00 AM +1 day	❌
8:00 PM	6:00 AM +1 day	❌
9:00 PM	7:00 AM +1 day	❌
10:00 PM	8:00 AM +1 day	❌
11:00 PM	9:00 AM +1 day	❌

Work hours defined as 09:00–18:00 local time. ✅ Both in work hours ⚠️ Borderline ❌ Outside work hours.

MST to GMT+3:30: Complete 24-Hour Time Conversion Table

Phoenix (MST)	Tehran (GMT+3:30)	IST (UTC+5:30)
12:00 AM	10:30 AM	12:30 PM
1:00 AM	11:30 AM	1:30 PM
2:00 AM	12:30 PM	2:30 PM
3:00 AM	1:30 PM	3:30 PM
4:00 AM	2:30 PM	4:30 PM
5:00 AM	3:30 PM	5:30 PM
6:00 AM	4:30 PM	6:30 PM
7:00 AM	5:30 PM	7:30 PM
8:00 AM	6:30 PM	8:30 PM
9:00 AM	7:30 PM	9:30 PM
10:00 AM	8:30 PM	10:30 PM
11:00 AM	9:30 PM	11:30 PM
12:00 PM	10:30 PM	12:30 AM
1:00 PM	11:30 PM	1:30 AM
← Date changes in Tehran →
2:00 PM	12:30 AM +1	2:30 AM
3:00 PM	1:30 AM +1	3:30 AM
4:00 PM	2:30 AM +1	4:30 AM
5:00 PM	3:30 AM +1	5:30 AM
6:00 PM	4:30 AM +1	6:30 AM
7:00 PM	5:30 AM +1	7:30 AM
8:00 PM	6:30 AM +1	8:30 AM
9:00 PM	7:30 AM +1	9:30 AM
10:00 PM	8:30 AM +1	10:30 AM
11:00 PM	9:30 AM +1	11:30 AM

IST (India Standard Time, UTC+5:30) shown as reference for Indian users. +1/−1 indicates a different calendar day.

48 Cities in Phoenix (MST) & 163 Cities in Tehran (GMT+3:30)

Phoenix & 47 more — Phoenix (MST, UTC-7)

Tehran & 162 more — Tehran (GMT+3:30, UTC+3:30)

Hamadan, IR Yazd, IR Ardabil, IR Bandar `Abbas, IR Arak, IR Eslamshahr, IR Sanandaj, IR Qazvin, IR Zanjan, IR Gorgan, IR Shahriar, IR Shahr-e Qods, IR Kashan, IR Malard, IR Maragheh, IR Sarta, IR Dezful, IR Babol, IR Qa'em Shahr, IR Khomeyni Shahr, IR Sabzevar, IR Andimeshk, IR Amol, IR Pakdasht, IR Najafabad, IR Borujerd, IR Madan, IR Qarchak, IR Bojnurd, IR Varamin, IR Bandar-e Bushehr, IR Neyshabur, IR Saveh, IR Birjand, IR Nasim Shahr, IR Khorramabad, IR Khowy, IR Bukan, IR Shahr-e Kord, IR Semnan, IR Fardis, IR Sirjan, IR Shahin Shahr, IR Malayer, IR Mahabad, IR Saqqez, IR Shahrud, IR Khodabandeh, IR Bandar-e Mahshahr, IR Rafsanjan, IR Borazjan, IR Gonbad-e Kavus, IR Marvdasht, IR Quchan, IR Jahrom, IR Kamalshahr, IR Torbat-e Heydariyeh, IR Marivan, IR Shahreza, IR Zabol, IR Khorramshahr, IR Marand, IR Jiroft, IR Salmas, IR Bam, IR Behbahan, IR Dorud, IR Nazarabad, IR Mohammad Shahr, IR Bandar-e Anzali, IR Iranshahr, IR Fasa, IR Baneh, IR Yasuj, IR Chabahar, IR Robat Karim, IR Kashmar, IR Shushtar, IR Ahar, IR Masjed Soleyman, IR Torbat-e Jam, IR Abhar, IR Mianeh, IR Do Gonbadan, IR Kazerun, IR Behshahr, IR Alvand, IR Piranshahr, IR Eslamabad-e Gharb, IR Kuhdasht, IR Fulad Shahr, IR Khowrasgan, IR Tajrish, IR Shirvan, IR Meybod, IR Takestan, IR Langarud, IR Bumahen, IR Baharestan, IR Aligudarz, IR Bandar-e Emam Khomeyni, IR Bandar Emam, IR Qorveh, IR Shush, IR Nahavand, IR Bonab, IR Ardakan, IR Ramhormoz, IR Meshgin Shahr, IR Bandar-e Genaveh, IR Naqadeh, IR Khomeyn, IR Omidiyeh, IR Aran Bidgol, IR Baqershahr, IR Mahdasht, IR Mobarakeh, IR Meshkin Dasht, IR Neka, IR Kangan, IR Abyek, IR Saravan, IR Babolsar, IR Esfarayen, IR Damghan, IR Zarand, IR Borujen, IR Dehdasht, IR Khash, IR Taybad, IR Kut-e `Abdollah, IR Zarrin Shahr, IR Asadabad, IR Hashtgerd, IR Tonekabon, IR Khorramdarreh, IR Eqbaliyeh, IR Javanrud, IR Hashtpar, IR Sefrou, MA Sabbashahr, IR Bandar-e Torkaman, IR Chenaran, IR Bijar, IR `Aliabad-e Katul, IR Kahnuj, IR Susangerd, IR Tuyserkan, IR

Convert Phoenix (MST) to Tehran (GMT+3:30) Time — 10 hours 30 minutes apart