At a Glance

Copenhagen:
Population: 1,825,814
Size: 2,673 km²
Language: Danish, English, German
People: Danish, foreign nationals
Religion: Lutheran
Time: Greenwich Mean Time plus one hour. When it's noon in New York, it's 6pm in Denmark.
Currency: Currency is the Danish Krone (DKr). Banking hours are 9:30am-4pm Monday through Friday; 9:30am-6pm on Thursday.
Electricity: 220 volts, 2 pin plugs are standard.

Oslo:
Population: 557,052
Size: 454 square kilometers
Language: Bokmal
People: Nordic
Religion: Evangelical Lutheran
Time: Greenwich Mean Time plus one hour. If it's noon in New York, it's 6pm in Norway.
Currency: Currency is the Norwegian Kroner. Banking hours are usually 8am to 3:30pm during the week.
Electricity: 220 volts, 2-pin round plugs are standard.

Stockholm:
Population: 792,593
Size: 4,160 square kilometers
Language: Swedish, English
People: Swedes
Religion: Lutheran
Time: Central European Time. When it's noon in New York, it's 6pm in Sweden.
Currency: Currency is the Swedish Krona. Banking hours are generally 9:30am to 3pm, Monday through Friday. All banks are closed on Saturdays except those at airports.
Electricity: 220 volts, round 2-pin plugs are standard.

Helsinki:
Population: 568,146
Size: 187.1 square kilometers
Language: Finnish, Swedish
People: Finns
Religion: Lutheran and Orthodox
Time: Greenwich Mean Time plus two hours. If it's noon in New York, it's 7pm in Finland.
Currency: Currency is the Euro. Banking hours are generally 9:15am-4:15pm, closed on Saturdays and Sundays.
Electricity: 220 volts, 2 pin plugs are standard.