| Dublin Ponte Tresa | Central European Time | -01:00 |
| Dublin Ponte do Rol | Western European Time | 00:00 |
| Dublin Ponte Fabbrica | Central European Time | -01:00 |
| Dublin Ponte Nizza | Central European Time | -01:00 |
| Dublin Pontresina | Central European Time | -01:00 |
| Dublin Pontian District | Malaysia Time | -08:00 |
| Dublin Rạch Giá | Indochina Time | -07:00 |
| Dublin Rạch Giá | Indochina Time | -07:00 |
| Dublin Radda in Chianti | Central European Time | -01:00 |
| Dublin Radoľa | Central European Time | -01:00 |
| Dublin Rothenburg ob der Tauber | Central European Time | -01:00 |
| Dublin Rougham | United Kingdom Time | 00:00 |
| Dublin Ram Nagar | India Standard Time | -05:30 |
| Dublin Rostrenen | Central European Time | -01:00 |
| Dublin Rothesay | United Kingdom Time | 00:00 |
| Dublin Rothesay | Atlantic Time | 04:00 |
| Dublin Röthlein | Central European Time | -01:00 |
| Dublin Rothschild | Central Time | 06:00 |
| Dublin Rovinj | Central European Time | -01:00 |
| Dublin Rowley Regis | United Kingdom Time | 00:00 |
| Dublin Rourkela | India Standard Time | -05:30 |
| Dublin Rouse Hill | Eastern Australia Time | -11:00 |
| Dublin Rubano | Central European Time | -01:00 |
| Dublin Rozelle | Eastern Australia Time | -11:00 |
| Dublin Rozaje | Central European Time | -01:00 |
| Dublin Royersford | Eastern Time | 05:00 |
| Dublin Roxbury Township | Eastern Time | 05:00 |
| Dublin Raeford | Eastern Time | 05:00 |
| Dublin Raf Raf | Central European Time | -01:00 |
| Dublin Raglan | New Zealand Time | -13:00 |
| Dublin Rafah | Eastern European Time | -02:00 |
| Dublin Rahim Yar Khan | Pakistan Time | -05:00 |
| Dublin Rahovic | Central European Time | -01:00 |
| Dublin Rainsville | Central Time | 06:00 |
| Dublin Rakovica | Central European Time | -01:00 |
| Dublin Rajosana | India Standard Time | -05:30 |
| Dublin Rajapalayam | India Standard Time | -05:30 |
| Dublin Rajadewali | Pakistan Time | -05:00 |