IWC Schaffhausen Spitfire UTC Mode D'emploi page 26

Reading the UTC time display
Your watch shows the actual UTC time or the actual time of
day in another time zone on a rotating 24-hour ring. Since
time zones differ by a full hour, you can read the minutes
directly on the minute hand.
UTC difference – cities in each time zone
0 London, Lisbon, Las Palmas, Casablanca, Porto
+1 Paris, Brussels, Stockholm, Berlin, Warsaw, Vienna,
Frankfurt, Milan, Prague, Rome, Madrid, Zurich,
Geneva, Amsterdam, Barcelona, Copenhagen
+2 Cairo, Helsinki, Athens, Beirut, Johannesburg, Kiev,
Istanbul, Tel Aviv, Sofia, Jerusalem
+3 Moscow, Kuwait, Nairobi
+4 Dubai, Mauritius, Abu Dhabi, Muscat
+5 Karachi, Delhi, Maldives
+6 Dacca, Rangoon
+7 Bangkok, Hanoi, Jakarta
+8 Hong Kong, Peking, Manila, Brunei, Borneo, Perth,
Singapore, Kuala Lumpur, Taipei
+9 Tokyo, Seoul, Sapporo
+10 Guam, Melbourne, Alice Springs
+11 Nouméa, Sydney, Canberra
+12 International Date Line, Fiji, Wellington
–11 Samoa, Midway
–10 Honolulu, Tahiti
–9 Anchorage