Casio GB-6900B User's Manual For Watch Functions page 75

City Name List
City Name
（UTC）
Reykjavik
Lisbon
Casablanca
London
Madrid
Paris
Algiers
Brussels
Amsterdam
Zurich
Time
City Name
Zone
Frankfurt
Oslo
0 Rome
Copenhagen
Berlin
Stockholm
Budapest
Warsaw
+1
Cape Town
Sofia
Athens
Time
City Name
Zone
Helsinki
Istanbul
Kyiv
Cairo
+1
Jerusalem
Moscow*
Addis Ababa
Jeddah
Tehran
+2 Dubai
Kabul
Time
Zone
+2
+3
+3.5
+4
+4.5
L-1