Useful Information

31st Congress of the International Council of the Aeronautical Sciences

Time Difference / Business Hours

Brazilian time is 3 hours behind Greenwich Mean Time (GMT-3). Business hours for banks are generally from 10:00 to 16:00 on weekdays only. Banks are closed on Saturdays, Sundays and public holidays, however, their dedicated ATMs are widely available especially at shopping malls.



Brazil’s currency is the real (R$,BRL). There are 2, 5, 10, 20, 50 and 100 real bills. Fractions of the real are called centavos and circulate in the form of coins. Coins come in 5, 10, 25 and 50 centavos as well as a 1 real coin. Since the 1 centavo coin was removed from circulation, if a bill with a fractioned value (e.g., R$ 24.52) is paid using cash, the change may be rounded up/down to the nearest value. If, on the other hand, you pay the same bill using the credit card, you will pay the exact amount.

Currency exchange can be performed at designated establishments at airports or at shopping malls. Banks may also perform these transactions but only at specific agencies.

Credit cards are widely accepted in major cities, especially in restaurants, shops and supermarkets. However, smaller towns, taxis or other small businesses may only take cash. Moreover, MasterCard and Visa flags are more widely accepted than American Express or Diners/Discover. In addition, certain currency exchange companies sell pre-paid local currency cards that can be used in Brazil. Either way, it is advisable to ask first if the establishment will accept your specific card.




Electricity & Voltage

The electricity supply commonly used in Brazil is the 127-volt 60Hz system. However, most airports and some cities use 220-volt wiring. As such, one is advised to check your electronic equipment and the available power outlet beforehand. Moreover, Brazil uses power plugs and outlets of Type N, which consists of three round pins; two parallel (live) and a third one (ground) in the middle and slightly above the centerline. However, since this standardization happened quite recently (2010), it is possible to be faced with different outlets in older establishments. These may include Types A&B and Type C.



Tipping is not a traditional custom in Brazil. A 10% service charge may be added to your bill at restaurants and hotels. It is also not necessary to tip a taxi driver unless he assists you with luggage or provides an extra service.



Although the official language of the congress is English, Brazil’s official language is Portuguese (more specifically, the Brazilian Portuguese). While the staff at airports and hotels as well as academic and industry members mostly speak English, the average citizen (this includes shop clerks and taxi drivers) may not. Therefore, it is advisable to have a few “magic words” at hand.

English Portuguese
Excuse me Com licença
Please Por favor
Thank you Obrigado
I am sorry Me desculpe
Yes Sim
No Não
Hello Olá
Goodbye Tchau
Good morning Bom dia
Good afternoon Boa tarde
Good evening / Good night Boa noite
The check, please A conta, por favor
Do you accept credit card? Você aceita cartão de crédito?
How much? Quanto custa?
Where is the __________?
Onde é o __________?
Please take me to the __________ Por favor me leve ao __________
Right Direita
Left Esquerda
I do not speak Portuguese Eu não falo português
Please help me Por favor me ajude


Being a Latin-derived language, Spanish, French and Italian speakers may find it easier to understand and pronounce most of the vocabulary. In any event, having a translation or pronunciation tool at hand may prove to be helpful.



The Brazilian mobile network has some peculiarities when compared to the rest of the world, leading to some devices not functioning. Restrictions and regulations in this area are defined by Anatel, an acronym for National Telecommunications Agency. There is not a specific brand whose devices don’t work in Brazil, but devices that are not aligned to some Anatel specifications may be useless when arriving in the country.
As a general rule, cellphones must be compatible with a GSM network, which stands for Global System for Mobile. Countries like the United States and some Asian nations use the CDMA network, which stands for Code Division Multiple Access. There are different frequency variations inside GSM. Each Brazilian mobile operators use a band. Simply speaking, each band is like a “road” used by different services. More specifically, there are four GSM frequencies in Brazil:

  • 850 MHz;
  • 900 MHz;
  • 1800 MHz;
  • 1900 MHz.

The best way to prevent any headaches is to check if the mobile phone being brought to Brazil works in various frequencies — in other words, if it is quadriband. Also, cellphones that are not homologated by Anatel may suffer interferences and other malfunctions. In these cases, the agency states that any eventual service flaws presented by non-homologated devices are the responsibility of the consumers.
If you are willing to bring your cellphone from abroad or if you want to buy a mobile phone in countries other than Brazil, make sure you follow the recommendations below:

  • GSM technology is crucial. Make sure that the device works with this system instead of CDMA;
  • Quadriband devices are a sure bet. This allows devices to be compatible with different frequency bands;
  • If you want to enjoy 4G network, check the compatible frequency. This technology in Brazil works in a band of 2.5 GHz, which is different from many countries;
  • Try buying a Brazilian SIM card. If your cellphone is unlocked, getting a local “chip”, as known in the country, might be cheaper and more practical.