World City Abbreviations Reference Table
Country Name  | City code  | Time Offset  | DST Period  | 
  | 
  | (GMT = 0) | 
  | 
Casablanca, Marocco  | CAS  | 0  | No DST  | 
Canberra, Australia  | CBR  | 10  | From Last Sunday in October to  | 
  | 
  | 
  | Last Sunday in March  | 
Caracas, Venezuela  | CCS | No DST  | |
Calcutta, India  | CCU | 5.5  | No DST  | 
Chicago IL, USA  | CGX  | From 1st Sunday in April to Last  | |
  | 
  | 
  | Sunday in October  | 
Colombo, Sri Lanka  | CMB  | 6  | No DST  | 
Copenhagen, Denmark  | CPH  | 1  | From Last Sunday in March to Last  | 
  | 
  | 
  | Sunday in October  | 
Cape Town, South Africa CPT  | 2  | No DST  | |
Dhaka, Bangladesh  | DAC  | 6  | No DST  | 
Damascus, Syria  | DAM  | 2  | From 1st April to 1st October  | 
New Delhi, India  | DEL  | 5.5  | No DST  | 
Detroit MI, USA  | DTW  | From 1st Sunday in April to Last  | |
  | 
  | 
  | Sunday in October  | 
Dublin, Ireland  | DUB | 0  | From Last Sunday in March to Last  | 
  | 
  | 
  | Sunday in October  | 
Frankfurt, Germany  | FRA  | 1  | From Last Sunday in March to Last  | 
  | 
  | 
  | Sunday in October  |