So the cities are to help you associate the proper time zone.

Hi Huckham – I just posted the time zone differences – thanks

Hi Jimmy – sorry about not posting that in the article – here's what I've found, time differences between Johannesburg by cities throughout the world:

Time Offsets South Africa | World During World Cup 2010

Austria (0)
Bulgaria (0)
Croatia (0)
Czech Republic (0)
Denmark (0)
England (-1)
France (0)
Germany (0)
Greece (+1)
Holland (0)
Italy (0)
Ireland (-1)
Latvia (+1)
Portugal (-1)
Russia (+2)
Scotland (-1)
Spain (0)
Sweden (0)
Switzerland (0)
Ukraine (+1)
Acra (-2)
Angola (-1)
Argentina (-5)
Auckland (+10)
Beijing (+6)
Cairo (+1)
Costa Rica (-8)
Dublin (-1)
Djibouti (+1)
Geneva (0)
Ghana (-2)
Hanoi (+5)
Hong Kong (+6)
Iran (+1.5)
Ireland (-1)
Jakarta (+5)
Japan (+7)
Johannesburg (0)
Korea (+7)
Kyev (+1)
Las Vegas (-9)
Lisbon (-1)
Lome (-2)
Los Angeles (-9)
Luanda (-1)
Malaysia (+6)
Mexico (-7)
Montreal (-6)
Moscow (+2)
New Delhi (+3.5)
New York (-6)
Orlando (-6)
Ottawa (-6)
Paraguay (-6)
Perth (+6)
Philadelphia (-6)
Port of Spain (-6)
Reykjavik (-2)
Rio de Janeiro (-5)
Saudi Arabia (+1)
Seoul (+7)
Shanghai (+6)
Singapore (+6)
Sydney (+8)
Tbilisi (+2)
Thailand (+5)
Toronto (-6)
Tunisia (0)
UK (-1)
Vancouver (-9)
Vienna (0)
Wellington (+10)
Winnipeg (-7)
Yamoussoukro (-2)