Mexico City
Mexico
--:-- --
CST · UTC-6 3 hours difference
Sao Paulo
Brazil
--:-- --
GMT-3 · UTC-3 Convert Mexico City (CST) to Sao Paulo (GMT-3) Time — 3 hours apart
America/Mexico_City · CST · UTC-6 | America/Sao_Paulo · GMT-3 · UTC-3 · 3 hours difference · 1036 cities
24-Hour Overlap Timeline
✅ Overlap: 9:00 AM–3:00 PM in Mexico City · 12:00 PM–6:00 PM in Sao Paulo (6h 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 → | ||||||||||||||||||||||||
| 🇲🇽 Mexico City UTC-6 | 6p | 7p | 8p | 9p | 10p | 11p | 12a | 1a | 2a | 3a | 4a | 5a | 6a | 7a | 8a | 9a | 10a | 11a | 12p | 1p | 2p | 3p | 4p | 5p |
| 🇧🇷 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 |
Both working Working Off hours Sleeping Now
Key Facts: Mexico City (CST) vs Sao Paulo (GMT-3)
Time Gap
3h
Sao Paulo ahead
DST Status
✅ Mexico City
No DST
✅ Sao Paulo: No DST
Cities in CST
436
Largest: Mexico City
21,804,000 pop.
Overlap Window
6h window
9:00 AM – 3:00 PM (CST)
12:00 PM – 6:00 PM (GMT-3)
Find Cities in Mexico City & Sao Paulo Timezones
The CST and GMT-3 timezones are separated by 3 hours. Mexico City is the largest city in the America/Mexico_City zone and Sao Paulo is the largest in America/Sao_Paulo. Neither timezone observes daylight saving time, so the difference is constant year-round. For scheduling between these regions, the key fact is: there are 6 hours of mutual business-hours overlap each day.
Best Times to Schedule Calls: Mexico City (CST) ↔ Sao Paulo (GMT-3)
| Mexico City (CST) | Sao Paulo (GMT-3) | Quality |
|---|---|---|
| 3:00 AM | 6:00 AM | ❌ |
| 4:00 AM | 7:00 AM | ❌ |
| 5:00 AM | 8:00 AM | ❌ |
| 6:00 AM | 9:00 AM | ❌ |
| 7:00 AM | 10:00 AM | ⚠️ |
| 8:00 AM | 11:00 AM | ⚠️ |
| 9:00 AM | 12:00 PM | ✅ |
| 10:00 AM | 1:00 PM | ✅ |
| 11:00 AM | 2:00 PM | ✅ |
| 12:00 PM | 3:00 PM | ✅ |
| 1:00 PM | 4:00 PM | ✅ |
| 2:00 PM | 5:00 PM | ✅ |
| 3:00 PM | 6:00 PM | ⚠️ |
| 4:00 PM | 7:00 PM | ⚠️ |
| 5:00 PM | 8:00 PM | ❌ |
| 6:00 PM | 9:00 PM | ❌ |
| 7:00 PM | 10:00 PM | ❌ |
| 8:00 PM | 11:00 PM | ❌ |
| 9:00 PM | 12:00 AM +1 day | ❌ |
Work hours defined as 09:00–18:00 local time. ✅ Both in work hours ⚠️ Borderline ❌ Outside work hours.
CST to GMT-3: Complete 24-Hour Time Conversion Table
| Mexico City (CST) | Sao Paulo (GMT-3) | IST (UTC+5:30) |
|---|---|---|
| 12:00 AM | 3:00 AM | 11:30 AM |
| 1:00 AM | 4:00 AM | 12:30 PM |
| 2:00 AM | 5:00 AM | 1:30 PM |
| 3:00 AM | 6:00 AM | 2:30 PM |
| 4:00 AM | 7:00 AM | 3:30 PM |
| 5:00 AM | 8:00 AM | 4:30 PM |
| 6:00 AM | 9:00 AM | 5:30 PM |
| 7:00 AM | 10:00 AM | 6:30 PM |
| 8:00 AM | 11:00 AM | 7:30 PM |
| 9:00 AM | 12:00 PM | 8:30 PM |
| 10:00 AM | 1:00 PM | 9:30 PM |
| 11:00 AM | 2:00 PM | 10:30 PM |
| 12:00 PM | 3:00 PM | 11:30 PM |
| 1:00 PM | 4:00 PM | 12:30 AM |
| 2:00 PM | 5:00 PM | 1:30 AM |
| 3:00 PM | 6:00 PM | 2:30 AM |
| 4:00 PM | 7:00 PM | 3:30 AM |
| 5:00 PM | 8:00 PM | 4:30 AM |
| 6:00 PM | 9:00 PM | 5:30 AM |
| 7:00 PM | 10:00 PM | 6:30 AM |
| 8:00 PM | 11:00 PM | 7:30 AM |
| ← Date changes in Sao Paulo → | ||
| 9:00 PM | 12:00 AM +1 | 8:30 AM |
| 10:00 PM | 1:00 AM +1 | 9:30 AM |
| 11:00 PM | 2:00 AM +1 | 10:30 AM |
IST (India Standard Time, UTC+5:30) shown as reference for Indian users. +1/−1 indicates a different calendar day.
436 Cities in Mexico City (CST) & 600 Cities in Sao Paulo (GMT-3) — Page 1 of 3
Mexico City & 435 more — Mexico City (CST, UTC-6)
- Mexico City, MX 21.8M
- Guadalajara, MX 5.5M
- Monterrey, MX 5.3M
- Guatemala City, GT 3.0M
- Toluca, MX 2.5M
- Ecatepec, MX 1.7M
- Leon de los Aldama, MX 1.6M
- Puebla, MX 1.6M
- San Jose, CR 1.5M
- San Salvador, SV 1.5M
- Zapopan, MX 1.5M
- Comayaguela, HN 1.3M
- Tegucigalpa, HN 1.2M
- Nezahualcoyotl, MX 1.1M
- Ciudad Nezahualcoyotl, MX 1.1M
Managua, NIMorelia, MXAguascalientes, MXChihuahua, MXNaucalpan de Juarez, MXMerida, MXSaltillo, MXQueretaro, MXSan Luis Potosi, MXSan Pedro Sula, HNGuadalupe, MXAcapulco de Juarez, MXTlaquepaque, MXDurango, MXTlalnepantla, MXChimalhuacan, MXIrapuato, MXTuxtla, MXTonala, MXIxtapaluca, MXMixco, GTCiudad Apodaca, MXTultitlan de Mariano Escobedo, MXVilla Nueva, GTCiudad Lopez Mateos, MXCiudad General Escobedo, MXSan Nicolas de los Garza, MXVeracruz, MXXalapa, MXCelaya, MXNicolas Romero, MXTecamac, MXMinatitlan, MXVillahermosa, MXCuernavaca, MXUruapan, MXSoledad de Graciano Sanchez, MXGomez Palacio, MXSalamanca, MXTehuacan, MXCoatzacoalcos, MXChalco, MXCiudad Benito Juarez, MXCiudad Santa Catarina, MXCiudad Victoria, MXLa Pena, MXSan Juan del Rio, MXOaxaca, MXPachuca, MXTampico, MXCoacalco, MXSan Miguel, SVHuixquilucan, MXSan Juan Sacatepequez, GTSoyapango, SVSanta Ana, SVSaskatoon, CASan Pedro Carcha, GTCampeche, MXCarmen, MXMonclova, MXGarcia, MXFresnillo, MXCoban, GTCholoma, HNRegina, CAChilpancingo, MXPuerto Vallarta, MXTapachula, MXJiutepec, MXComalcalco, MXZamora, MXQuetzaltenango, GTCordoba, MXApopa, SVLa Ceiba, HNCiudad Madero, MXCuautla, MXGuanajuato, MXCholula de Rivadabia, MXJalapa, GTCiudad del Carmen, MXManzanillo, MXPoza Rica de Hidalgo, MXEl Progreso, HNSan Cristobal, MXCuauhtemoc, MXCuautitlan, MXCiudad Valles, MXLeon, NISanta Maria Texmelucan, MXChicoloapan, MXLagos de Moreno, MXTonacatepeque, SVEscuintla, GTVilla Canales, GTJutiapa, GTSan Martin Texmelucan de Labastida, MXSan Marcos, CRTuxtepec, MXSan Andres Tuxtla, MXPapantla de Olarte, MXMacuspana, MXIxtlahuaca, MXCiudad Choluteca, HNAmatitlan, GTTulancingo, MXChichicastenango, GTDelicias, MXValle de Santiago, MXVillanueva, HNPenjamo, MXVilla de Alvarez, MXZacatecas, MXPesqueria, MXTipitapa, NIColima, MXComayagua, HNIlopango, SVMejicanos, SVTepatitlan de Morelos, MXLas Maravillas, MXCuautitlan Izcalli, MXSanta Tecla, SVKanasin, MXMasaya, NICunduacan, MXHuehuetenango, GTZinacantepec, MXAhuachapan, SVMatagalpa, NITultepec, MXPetapa, GTApatzingan de la Constitucion, MXSanta Lucia Cotzumalguapa, GTCiudad Sandino, NIDelgado, SVJuticalpa, HNChinautla, GTOrizaba, MXSan Pedro Garza Garcia, MXCiudad Hidalgo, MXPuerto Cortes, HNChinandega, NIChilapa de Alvarez, MXCoatepeque, GTTizayuca, MXTotonicapan, GTMiramar, MXIguala de la Independencia, MXMatamoros, MXCatacamas, HNChimaltenango, GTTecoman, MXTemixco, MXEl Pueblito, MXCiudad Guzman, MXTlapacoyan, MXComitan, MXTecpan Guatemala, GTPochuta, GTEsteli, NISan Martin, SVChilon, MXChiquimula, GTPuerto Barrios, GTSan Antonio la Isla, MXSan Antonio Enchisi, MXMartinez de la Torre, MXRetalhuleu, GTMalacatan, GTSan Francisco de la Piedad, MXJoyabaj, GTMorales, GTOcotlan, MXGranada, NITemoaya, MXLerma, MXTexcoco, MXParral, MXTenancingo, MXOlanchito, HNTula de Allende, MXTepexpan, MXMatehuala, MX
Sao Paulo & 599 more — Sao Paulo (GMT-3, UTC-3)
- Sao Paulo, BR 23.1M
- Buenos Aires, AR 16.7M
- Rio de Janeiro, BR 12.6M
- Belo Horizonte, BR 5.3M
- Fortaleza, BR 4.2M
- Salvador, BR 2.4M
- Cordoba, AR 2.1M
- Curitiba, BR 1.8M
- Montevideo, UY 1.7M
- Recife, BR 1.5M
- Porto Alegre, BR 1.3M
- Guarulhos, BR 1.3M
- Belem, BR 1.3M
- Rosario, AR 1.3M
- Campinas, BR 1.2M
Goiania, BRSao Luis, BRMaceio, BRSantiago del Estero, ARLa Plata, ARSao Goncalo, BRTeresina, BRJoao Pessoa, BRSao Bernardo do Campo, BRNatal, BRSanto Andre, BRSorocaba, BRMar del Plata, ARAracaju, BROsasco, BRSan Miguel de Tucuman, ARJaboatao dos Guararapes, BRJuiz de Fora, BRSao Jose dos Campos, BRContagem, BRSalta, ARMacapa, BRCampos, BRRibeirao Preto, BRUberlandia, BRNiteroi, BRFeira de Santana, BRAnanindeua, BRAsuncion, PYVila Velha, BRSan Juan, ARLanus, ARMogi das Cruzes, BRLondrina, BRJoinvile, BRPiracicaba, BRCampina Grande, BRSantos, BRMaua, BRMaringa, BRSanta Fe, ARJundiai, BRDiadema, BRItaquaquecetuba, BRBauru, BRBlumenau, BRCaxias do Sul, BRSao Jose do Rio Preto, BRCaucaia, BRCorrientes, AROlinda, BRPraia Grande, BRCascavel, BRCanoas, BRCarapicuiba, BRFlorianopolis, BRPaulista, BRVitoria da Conquista, BRSantarem, BRRibeirao das Neves, BRCariacica, BRPelotas, BRVitoria, BRSan Salvador de Jujuy, ARSerra, BRTaubate, BRBarueri, BRGuaruja, BRCiudad del Este, PYMontes Claros, BRBetim, BRSao Vicente, BRPalmas, BRBahia Blanca, ARResistencia, ARNeuquen, ARAnapolis, BRSan Lorenzo, PYFranca, BRJuazeiro do Norte, BRFoz do Iguacu, BRPetropolis, BRPosadas, ARPonta Grossa, BRTaboao da Serra, BRImperatriz, BRParana, ARSumare, BRMossoro, BRItajai, BRLuque, PYQuilmes, ARIndaiatuba, BRSao Carlos, BRCaruaru, BRParnamirim, BRUberaba, BRLimeira, BRGovernador Valadares, BRMacae, BRSao Jose de Ribamar, BRMerlo, ARSanta Maria, BRAraraquara, BRVolta Redonda, BRAmericana, BRSete Lagoas, BRParamaribo, SRMarilia, BRJacarei, BRGonzalez Catan, ARArapiraca, BRMaracanau, BRFormosa, ARGravatai, BRDivinopolis, BRSuzano, BRMage, BRIpatinga, BRRio Verde, BRPresidente Prudente, BRItaborai, BRCapiata, PYViamao, BRChapeco, BRBanfield, ARItapevi, BRSanta Luzia, BRPetrolina, BRJose C. Paz, ARHortolandia, BRSan Rafael, ARCriciuma, BRSobral, BRSanto Agostinho, BRSao Jose dos Pinhais, BRRio Claro, BRComodoro Rivadavia, ARAracatuba, BRRio Cuarto, ARConcordia, ARSan Lorenzo, ARSao Leopoldo, BRNossa Senhora do Socorro, BRRio Grande, BRGodoy Cruz, ARIsidro Casanova, ARLas Heras, ARItabuna, BRFerraz de Vasconcelos, BRFernando de la Mora, PYSanta Barbara d'Oeste, BRColombo, BRJaragua do Sul, BRGuarapuava, BRLa Rioja, ARBerazategui, ARHurlingham, ARCachoeiro de Itapemirim, BRJuazeiro, BRLuziania, BRTimon, BRSao Jose, BRNova Friburgo, BRAraguaina, BRSan Luis, ARBarra Mansa, BRPasso Fundo, BRFrancisco Morato, BRMaraba, BRItapecerica da Serra, BRItu, BRLinhares, BRSao Caetano do Sul, BRLajes, BRPocos de Caldas, BRSan Fernando, ARParnaiba, BRCamacari, BRBraganca Paulista, BRPindamonhangaba, BRJose Maria Ezeiza, ARSan Nicolas de los Arroyos, ARPatos de Minas, BRCatamarca, AR