The time in Poland is the same as in the whole Central Europe, i.e. GMT +1. In July summer daylight saving time adds 1 more hour.
The electricity standard in Poland is 230 Volts AC, 50Hz. Standard European appliances do not need any adaptors. In Poland plug and socket Type E is used. You can learn about different types of plugs and sockets here.
The international access code to Poland is +48, and the prefix number for Poznań is 61. To dial an international number from Poland you need to precede your country number with 00 (double zero). Cellular telephones: All three operators use dualband system: GSM 900/DCS 1800. DCS 1900 is not available. The major operators are: T-mobile, Plus GSM, Play and Orange.
The currency in Poland is złoty (zł, PLN). Although some places accept Euro, in general it is not possible to pay in Euro in shops or restaurants. It is quite easy and safe to exchange currency in many exchange (pol. kantor, kantor wymiany walut) offices located in main streets. Most of exchange offices accept Euro, American dollar, pound and Swiss franc. At the time of publishing this material the exchange rate is 1 euro = 4,33 złoty (zł, PLN), 1 USD = 4,10 złoty. You can check the current exchange rate for example here. At the airport foreign exchange office is located next to main entrance to the terminal and also on the mezzanine in the main hall. On the mezzanine there is also PKO S.A. bank. There are two cash machines near the main entrance to the terminal.
The opening hours depend on the owner of the shop. Most of the shops are open from Monday to Friday from 10 a.m. to 6 p.m., Saturday from 9 a.m. to 1 or 2 p.m. Grocer’s shops are open Monday through Friday from 6 a.m. to 8 p.m., Saturday from 9 a.m. am to 2 p.m. Some grocer’s shops are open also on Sunday. Supermarkets are usually open from 8 a.m. to 10 p.m., of monday to saturday.