What is the time difference between Sao Paulo and Tehran?

Tehran is 6 hours 30 minutes ahead of Sao Paulo during standard time.

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

The best times to connect are 9:00 AM GMT-3, 10:00 AM GMT-3, 11:00 AM GMT-3, when both regions are within standard business hours.

Sao Paulo to Tehran Time Converter — GMT-3 to GMT+3:30, 6 hours 30 minutes difference

24-Hour Overlap Timeline

✅ Overlap: 9:00 AM–12:00 PM in Sao Paulo · 3:00 PM–6:00 PM in Tehran (3h window)

	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 →
🇧🇷 Sao Paulo UTC-3	9p	10p	11p	12a	1a	2a	3a	4a	5a	6a	7a	8a	9a	10a	11a	12p	1p	2p	3p	4p	5p	6p	7p	8p
🇮🇷 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: Sao Paulo (GMT-3) vs Tehran (GMT+3:30)

Time Gap

6h 30m

Tehran ahead

DST Status

✅ Sao Paulo

No DST

✅ Tehran: No DST

Cities in GMT-3

600

Largest: Sao Paulo

23,086,000 pop.

Overlap Window

3h window

9:00 AM – 12:00 PM (GMT-3)

3:00 PM – 6:00 PM (GMT+3:30)

Find Cities in Sao Paulo & Tehran Timezones

The GMT-3 and GMT+3:30 timezones are separated by 6 hours 30 minutes. Sao Paulo is the largest city in the America/Sao_Paulo 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 are 3 hours of mutual business-hours overlap each day.

Best Times to Schedule Calls: Sao Paulo (GMT-3) ↔ Tehran (GMT+3:30)

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

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

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

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

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

600 Cities in Sao Paulo (GMT-3) & 163 Cities in Tehran (GMT+3:30) — Page 1 of 3

Sao Paulo & 599 more — Sao Paulo (GMT-3, UTC-3)

Goiania, BR Sao Luis, BR Maceio, BR Santiago del Estero, AR La Plata, AR Sao Goncalo, BR Teresina, BR Joao Pessoa, BR Sao Bernardo do Campo, BR Natal, BR Santo Andre, BR Sorocaba, BR Mar del Plata, AR Aracaju, BR Osasco, BR San Miguel de Tucuman, AR Jaboatao dos Guararapes, BR Juiz de Fora, BR Sao Jose dos Campos, BR Contagem, BR Salta, AR Macapa, BR Campos, BR Ribeirao Preto, BR Uberlandia, BR Niteroi, BR Feira de Santana, BR Ananindeua, BR Asuncion, PY Vila Velha, BR San Juan, AR Lanus, AR Mogi das Cruzes, BR Londrina, BR Joinvile, BR Piracicaba, BR Campina Grande, BR Santos, BR Maua, BR Maringa, BR Santa Fe, AR Jundiai, BR Diadema, BR Itaquaquecetuba, BR Bauru, BR Blumenau, BR Caxias do Sul, BR Sao Jose do Rio Preto, BR Caucaia, BR Corrientes, AR Olinda, BR Praia Grande, BR Cascavel, BR Canoas, BR Carapicuiba, BR Florianopolis, BR Paulista, BR Vitoria da Conquista, BR Santarem, BR Ribeirao das Neves, BR Cariacica, BR Pelotas, BR Vitoria, BR San Salvador de Jujuy, AR Serra, BR Taubate, BR Barueri, BR Guaruja, BR Ciudad del Este, PY Montes Claros, BR Betim, BR Sao Vicente, BR Palmas, BR Bahia Blanca, AR Resistencia, AR Neuquen, AR Anapolis, BR San Lorenzo, PY Franca, BR Juazeiro do Norte, BR Foz do Iguacu, BR Petropolis, BR Posadas, AR Ponta Grossa, BR Taboao da Serra, BR Imperatriz, BR Parana, AR Sumare, BR Mossoro, BR Itajai, BR Luque, PY Quilmes, AR Indaiatuba, BR Sao Carlos, BR Caruaru, BR Parnamirim, BR Uberaba, BR Limeira, BR Governador Valadares, BR Macae, BR Sao Jose de Ribamar, BR Merlo, AR Santa Maria, BR Araraquara, BR Volta Redonda, BR Americana, BR Sete Lagoas, BR Paramaribo, SR Marilia, BR Jacarei, BR Gonzalez Catan, AR Arapiraca, BR Maracanau, BR Formosa, AR Gravatai, BR Divinopolis, BR Suzano, BR Mage, BR Ipatinga, BR Rio Verde, BR Presidente Prudente, BR Itaborai, BR Capiata, PY Viamao, BR Chapeco, BR Banfield, AR Itapevi, BR Santa Luzia, BR Petrolina, BR Jose C. Paz, AR Hortolandia, BR San Rafael, AR Criciuma, BR Sobral, BR Santo Agostinho, BR Sao Jose dos Pinhais, BR Rio Claro, BR Comodoro Rivadavia, AR Aracatuba, BR Rio Cuarto, AR Concordia, AR San Lorenzo, AR Sao Leopoldo, BR Nossa Senhora do Socorro, BR Rio Grande, BR Godoy Cruz, AR Isidro Casanova, AR Las Heras, AR Itabuna, BR Ferraz de Vasconcelos, BR Fernando de la Mora, PY Santa Barbara d'Oeste, BR Colombo, BR Jaragua do Sul, BR Guarapuava, BR La Rioja, AR Berazategui, AR Hurlingham, AR Cachoeiro de Itapemirim, BR Juazeiro, BR Luziania, BR Timon, BR Sao Jose, BR Nova Friburgo, BR Araguaina, BR San Luis, AR Barra Mansa, BR Passo Fundo, BR Francisco Morato, BR Maraba, BR Itapecerica da Serra, BR Itu, BR Linhares, BR Sao Caetano do Sul, BR Lajes, BR Pocos de Caldas, BR San Fernando, AR Parnaiba, BR Camacari, BR Braganca Paulista, BR Pindamonhangaba, BR Jose Maria Ezeiza, AR San Nicolas de los Arroyos, AR Patos de Minas, BR Catamarca, AR

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 Sao Paulo (GMT-3) to Tehran (GMT+3:30) Time — 6 hours 30 minutes apart