Phoenix
United States
--:-- --
MST · UTC-7 10 hours 30 minutes difference
Tehran
Iran
--:-- --
GMT+3:30 · UTC+3:30 Convert Phoenix (MST) to Tehran (GMT+3:30) Time — 10 hours 30 minutes apart
America/Phoenix · MST · UTC-7 | Asia/Tehran · GMT+3:30 · UTC+3:30 · 10 hours 30 minutes difference · 211 cities
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 |
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)
- Phoenix, US 4.1M
- Tucson, US 880K
- Hermosillo, MX 856K
- Culiacan, MX 808K
- Mesa, US 507K
- Mazatlan, MX 501K
- Tepic, MX 426K
- Ciudad Obregon, MX 329K
- Guasavito, MX 320K
- Los Mochis, MX 298K
- Chandler, US 278K
- Gilbert, US 271K
- Nogales, MX 265K
- Heroica Nogales, MX 261K
- Glendale, US 250K
La Paz, MXScottsdale, USCabo San Lucas, MXEl Tezal, MXPeoria, USTempe, USSan Luis Rio Colorado, MXGuaymas, MXSurprise, USYuma, USSan Jose del Cabo, MXNavojoa, MXHeroica Guaymas, MXSan Tan Valley, USGoodyear, USBuckeye, USPrescott Valley, USAgua Prieta, MXAvondale, USSan Francisco, MXGuasave, MXFlagstaff, USHuebampo, MXCasas Adobes, USMaricopa, USHeroica Caborca, MXQueen Creek, USGuamuchil, MXPuerto Penasco, MXLake Havasu City, USCasa Grande, USMarana, USCatalina Foothills, US
Tehran & 162 more — Tehran (GMT+3:30, UTC+3:30)
- Tehran, IR 14.1M
- Mashhad, IR 3.7M
- Esfahan, IR 2.2M
- Karaj, IR 2.0M
- Shiraz, IR 1.6M
- Tabriz, IR 1.6M
- Ahvaz, IR 1.3M
- Qom, IR 1.2M
- Kermanshah, IR 947K
- Kerman, IR 738K
- Orumiyeh, IR 736K
- Borvayeh-ye Al Bu `Aziz, IR 690K
- Rasht, IR 680K
- Bahar, IR 673K
- Zahedan, IR 588K
Hamadan, IRYazd, IRArdabil, IRBandar `Abbas, IRArak, IREslamshahr, IRSanandaj, IRQazvin, IRZanjan, IRGorgan, IRShahriar, IRShahr-e Qods, IRKashan, IRMalard, IRMaragheh, IRSarta, IRDezful, IRBabol, IRQa'em Shahr, IRKhomeyni Shahr, IRSabzevar, IRAndimeshk, IRAmol, IRPakdasht, IRNajafabad, IRBorujerd, IRMadan, IRQarchak, IRBojnurd, IRVaramin, IRBandar-e Bushehr, IRNeyshabur, IRSaveh, IRBirjand, IRNasim Shahr, IRKhorramabad, IRKhowy, IRBukan, IRShahr-e Kord, IRSemnan, IRFardis, IRSirjan, IRShahin Shahr, IRMalayer, IRMahabad, IRSaqqez, IRShahrud, IRKhodabandeh, IRBandar-e Mahshahr, IRRafsanjan, IRBorazjan, IRGonbad-e Kavus, IRMarvdasht, IRQuchan, IRJahrom, IRKamalshahr, IRTorbat-e Heydariyeh, IRMarivan, IRShahreza, IRZabol, IRKhorramshahr, IRMarand, IRJiroft, IRSalmas, IRBam, IRBehbahan, IRDorud, IRNazarabad, IRMohammad Shahr, IRBandar-e Anzali, IRIranshahr, IRFasa, IRBaneh, IRYasuj, IRChabahar, IRRobat Karim, IRKashmar, IRShushtar, IRAhar, IRMasjed Soleyman, IRTorbat-e Jam, IRAbhar, IRMianeh, IRDo Gonbadan, IRKazerun, IRBehshahr, IRAlvand, IRPiranshahr, IREslamabad-e Gharb, IRKuhdasht, IRFulad Shahr, IRKhowrasgan, IRTajrish, IRShirvan, IRMeybod, IRTakestan, IRLangarud, IRBumahen, IRBaharestan, IRAligudarz, IRBandar-e Emam Khomeyni, IRBandar Emam, IRQorveh, IRShush, IRNahavand, IRBonab, IRArdakan, IRRamhormoz, IRMeshgin Shahr, IRBandar-e Genaveh, IRNaqadeh, IRKhomeyn, IROmidiyeh, IRAran Bidgol, IRBaqershahr, IRMahdasht, IRMobarakeh, IRMeshkin Dasht, IRNeka, IRKangan, IRAbyek, IRSaravan, IRBabolsar, IREsfarayen, IRDamghan, IRZarand, IRBorujen, IRDehdasht, IRKhash, IRTaybad, IRKut-e `Abdollah, IRZarrin Shahr, IRAsadabad, IRHashtgerd, IRTonekabon, IRKhorramdarreh, IREqbaliyeh, IRJavanrud, IRHashtpar, IRSefrou, MASabbashahr, IRBandar-e Torkaman, IRChenaran, IRBijar, IR`Aliabad-e Katul, IRKahnuj, IRSusangerd, IRTuyserkan, IR