| Tuggerah Jhikli Ambwari | India Standard Time | 04:30 |
| Tuggerah Jessup | Eastern Time | 14:00 |
| Tuggerah Jesus Maria | Peru Time | 15:00 |
| Tuggerah Jette | Central European Time | 08:00 |
| Tuggerah Jettingen-Scheppach | Central European Time | 08:00 |
| Tuggerah Jindalee | Eastern Australia Time | 00:00 |
| Tuggerah Jindivick | Eastern Australia Time | 00:00 |
| Tuggerah Jim Thorpe | Eastern Time | 14:00 |
| Tuggerah Jinan | China Time | 02:00 |
| Tuggerah Ironton | Eastern Time | 14:00 |
| Tuggerah Iruma | Japan Time | 01:00 |
| Tuggerah Ireland | United Kingdom Time | 09:00 |
| Tuggerah Ipswich | Eastern Time | 14:00 |
| Tuggerah Iowa Park | Central Time | 15:00 |
| Tuggerah Iphofen | Central European Time | 08:00 |
| Tuggerah Inzell | Central European Time | 08:00 |
| Tuggerah Inverurie | United Kingdom Time | 09:00 |
| Tuggerah Inverleigh | Eastern Australia Time | 00:00 |
| Tuggerah Innaloo | Western Australia Time | 02:00 |
| Tuggerah Intra | Central European Time | 08:00 |
| Tuggerah Ingersoll | Eastern Time | 14:00 |
| Tuggerah Ingleburn | Eastern Australia Time | 00:00 |
| Tuggerah Inez | Eastern Time | 14:00 |
| Tuggerah Inishmore | Ireland Time | 09:00 |
| Tuggerah Indapur | India Standard Time | 04:30 |
| Tuggerah Indiana | Eastern Time | 14:00 |
| Tuggerah Indialantic | Eastern Time | 14:00 |
| Tuggerah Indian Harbour Beach | Eastern Time | 14:00 |
| Tuggerah Indian Rocks Beach | Eastern Time | 14:00 |
| Tuggerah Imboden | Central Time | 15:00 |
| Tuggerah Immenstadt | Central European Time | 08:00 |
| Tuggerah Incline Village | Pacific Time | 17:00 |
| Tuggerah Inala | Eastern Australia Time | 00:00 |
| Tuggerah Inari | Eastern European Time | 07:00 |
| Tuggerah Ischgl | Central European Time | 08:00 |
| Tuggerah Irvine | Pacific Time | 17:00 |
| Tuggerah Irvine | United Kingdom Time | 09:00 |
| Tuggerah Irving | Central Time | 15:00 |
| Tuggerah Ishikawa | Japan Time | 01:00 |
| Tuggerah Issigeac | Central European Time | 08:00 |
| Tuggerah Islington | Eastern Australia Time | 00:00 |
| Tuggerah Islamorada | Eastern Time | 14:00 |
| Tuggerah Islamabad | Pakistan Time | 05:00 |
| Tuggerah Islandia | Eastern Time | 14:00 |
| Tuggerah Isle | Central Time | 15:00 |
| Tuggerah Isla Canela | Central European Time | 08:00 |
| Tuggerah Isla Mujeres | Eastern Time | 15:00 |
| Tuggerah Itabashi | Japan Time | 01:00 |
| Tuggerah Itatiaia | Brasilia Time | 13:00 |
| Tuggerah Itaunja | India Standard Time | 04:30 |