| Ireland São Tomé and Príncipe | Greenwich Mean Time | 00:00 |
| Ireland Saint Lucia | Atlantic Time | 04:00 |
| Ireland Mayotte | East Africa Time | -03:00 |
| Ireland U.S. Virgin Islands | Atlantic Time | 04:00 |
| Ireland Saint Vincent and the Grenadines | Atlantic Time | 04:00 |
| Ireland Seychelles | Pacific Time | 08:00 |
| Ireland Antigua and Barbuda | Newfoundland Time | 03:30 |
| Ireland Andorra | Central European Time | -01:00 |
| Ireland Dominica | Atlantic Time | 04:00 |
| Ireland Aruba | Atlantic Time | 04:00 |
| Ireland Marshall Islands | Marshall Islands Time | -12:00 |
| Ireland Bermuda | Eastern Time | 05:00 |
| Ireland American Samoa | Samoa Time | 11:00 |
| Ireland Greenland | West Greenland Time | 03:00 |
| Ireland Northern Mariana Islands | Chamorro Standard Time | -10:00 |
| Ireland Saint Kitts and Nevis | Atlantic Time | 04:00 |
| Ireland Faroe Islands | Western European Time | 00:00 |
| Ireland Cayman Islands | Malaysia Time | -08:00 |
| Ireland Monaco | Central European Time | -01:00 |
| Ireland Gibraltar | Central European Time | -01:00 |
| Ireland Montserrat | United Kingdom Time | 00:00 |
| Ireland Saint Helena | Eastern Time | 05:00 |
| Ireland Saint Pierre and Miquelon | Reunion Time | -04:00 |
| Ireland Falkland Islands (Islas Malvinas) | United Kingdom Time | 00:00 |
| Ireland Norfolk Island | Eastern Time | 05:00 |