| Dublin Hawkesbury | Eastern Time | 05:00 |
| Dublin Havana | Cuba Time | 05:00 |
| Dublin Havana | Eastern Time | 05:00 |
| Dublin Hausen bei Würzburg | Central European Time | -01:00 |
| Dublin Havelock North | New Zealand Time | -13:00 |
| Dublin Haverfordwest | United Kingdom Time | 00:00 |
| Dublin Havertown | Eastern Time | 05:00 |
| Dublin Jambiani | East Africa Time | -03:00 |
| Dublin Jane | Central Time | 06:00 |
| Dublin Jalhay | Central European Time | -01:00 |
| Dublin Jaljulia | Israel Time | -02:00 |
| Dublin Jalke Bk. | India Standard Time | -05:30 |
| Dublin Jasper | Central Time | 06:00 |
| Dublin Jasin | Malaysia Time | -08:00 |
| Dublin Jarmen | Central European Time | -01:00 |
| Dublin Järfälla | Central European Time | -01:00 |
| Dublin Jefferson | Eastern Time | 05:00 |
| Dublin Jayamkondan | India Standard Time | -05:30 |
| Dublin Jagannathpur | India Standard Time | -05:30 |
| Dublin Jadayampalayam | India Standard Time | -05:30 |
| Dublin Jahra | Arabian Time | -03:00 |
| Dublin Jaigaon | India Standard Time | -05:30 |
| Dublin Jaimalwala Alias Pireana | India Standard Time | -05:30 |
| Dublin Jaggayyapet | India Standard Time | -05:30 |
| Dublin Ivins | Mountain Time | 07:00 |
| Dublin Ittigen | Central European Time | -01:00 |
| Dublin Ivanhoe | Eastern Australia Time | -11:00 |
| Dublin Ixelles | Central European Time | -01:00 |
| Dublin Izumisano | Japan Time | -09:00 |
| Dublin Izurtza | Central European Time | -01:00 |
| Dublin Johns Island | Eastern Time | 05:00 |
| Dublin Jojutla de Juárez | Central Time | 06:00 |
| Dublin Jonesborough | Eastern Time | 05:00 |
| Dublin Jonestown | Central Time | 06:00 |
| Dublin Jonesville | Eastern Time | 05:00 |
| Dublin Joondalup | Western Australia Time | -08:00 |
| Dublin Jordan | Central Time | 06:00 |
| Dublin Jinzhou | China Time | -08:00 |
| Dublin Junagadh district | India Standard Time | -05:30 |
| Dublin Joshua Tree | Pacific Time | 08:00 |
| Dublin Jeleeb Al-Shuyoukh | Arabian Time | -03:00 |
| Dublin Jejuri | India Standard Time | -05:30 |
| Dublin Jenjarom | Malaysia Time | -08:00 |
| Dublin Jenkintown | Eastern Time | 05:00 |
| Dublin Jelutong | Malaysia Time | -08:00 |
| Dublin Jensen Beach | Eastern Time | 05:00 |
| Dublin Jerez | Central European Time | -01:00 |
| Dublin Jerome | Mountain Time | 07:00 |
| Dublin Jericho | Eastern Time | 05:00 |
| Dublin Jersey Shore | Eastern Time | 05:00 |