| Nagercoil Jhikli Ambwari | India Standard Time | 00:00 |
| Nagercoil Jessup | Eastern Time | 10:30 |
| Nagercoil Jesus Maria | Peru Time | 10:30 |
| Nagercoil Jette | Central European Time | 04:30 |
| Nagercoil Jettingen-Scheppach | Central European Time | 04:30 |
| Nagercoil Jindalee | Eastern Australia Time | -04:30 |
| Nagercoil Jindivick | Eastern Australia Time | -05:30 |
| Nagercoil Jim Thorpe | Eastern Time | 10:30 |
| Nagercoil Jinan | China Time | -02:30 |
| Nagercoil Ironton | Eastern Time | 10:30 |
| Nagercoil Iruma | Japan Time | -03:30 |
| Nagercoil Ireland | United Kingdom Time | 05:30 |
| Nagercoil Ipswich | Eastern Time | 10:30 |
| Nagercoil Iowa Park | Central Time | 11:30 |
| Nagercoil Iphofen | Central European Time | 04:30 |
| Nagercoil Inzell | Central European Time | 04:30 |
| Nagercoil Inverurie | United Kingdom Time | 05:30 |
| Nagercoil Inverleigh | Eastern Australia Time | -05:30 |
| Nagercoil Innaloo | Western Australia Time | -02:30 |
| Nagercoil Intra | Central European Time | 04:30 |
| Nagercoil Ingersoll | Eastern Time | 10:30 |
| Nagercoil Ingleburn | Eastern Australia Time | -05:30 |
| Nagercoil Inez | Eastern Time | 10:30 |
| Nagercoil Inishmore | Ireland Time | 05:30 |
| Nagercoil Indapur | India Standard Time | 00:00 |
| Nagercoil Indiana | Eastern Time | 10:30 |
| Nagercoil Indialantic | Eastern Time | 10:30 |
| Nagercoil Indian Harbour Beach | Eastern Time | 10:30 |
| Nagercoil Indian Rocks Beach | Eastern Time | 10:30 |
| Nagercoil Imboden | Central Time | 11:30 |
| Nagercoil Immenstadt | Central European Time | 04:30 |
| Nagercoil Incline Village | Pacific Time | 13:30 |
| Nagercoil Inala | Eastern Australia Time | -04:30 |
| Nagercoil Inari | Eastern European Time | 03:30 |
| Nagercoil Ischgl | Central European Time | 04:30 |
| Nagercoil Irvine | Pacific Time | 13:30 |
| Nagercoil Irvine | United Kingdom Time | 05:30 |
| Nagercoil Irving | Central Time | 11:30 |
| Nagercoil Ishikawa | Japan Time | -03:30 |
| Nagercoil Issigeac | Central European Time | 04:30 |
| Nagercoil Islington | Eastern Australia Time | -05:30 |
| Nagercoil Islamorada | Eastern Time | 10:30 |
| Nagercoil Islamabad | Pakistan Time | 00:30 |
| Nagercoil Islandia | Eastern Time | 10:30 |
| Nagercoil Isle | Central Time | 11:30 |
| Nagercoil Isla Canela | Central European Time | 04:30 |
| Nagercoil Isla Mujeres | Eastern Time | 10:30 |
| Nagercoil Itabashi | Japan Time | -03:30 |
| Nagercoil Itatiaia | Brasilia Time | 08:30 |
| Nagercoil Itaunja | India Standard Time | 00:00 |