| Iwanuma Honesdale | Eastern Time | 13:00 |
| Iwanuma Youngsville | Central Time | 14:00 |
| Iwanuma Honfleur | Central European Time | 07:00 |
| Iwanuma Yountville | Pacific Time | 16:00 |
| Iwanuma Hong | Central European Time | 07:00 |
| Iwanuma Ypres | Central European Time | 07:00 |
| Iwanuma Hong Kong | Hong Kong Time | 01:00 |
| Iwanuma Yeniçiftlik | Turkey Time | 06:00 |
| Iwanuma Honiton | United Kingdom Time | 08:00 |
| Iwanuma Yenifoça | Turkey Time | 06:00 |
| Iwanuma Horseheads | Eastern Time | 13:00 |
| Iwanuma Yenda | Eastern Australia Time | -01:00 |
| Iwanuma Ixelles | Central European Time | 07:00 |
| Iwanuma Yermo | Pacific Time | 16:00 |
| Iwanuma Horní Věstonice | Central European Time | 07:00 |
| Iwanuma Yeroskipou | Eastern European Time | 06:00 |
| Iwanuma Horning | United Kingdom Time | 08:00 |
| Iwanuma Yodogawa Ward | Japan Time | 00:00 |
| Iwanuma Horebeke | Central European Time | 07:00 |
| Iwanuma Hopland | Pacific Time | 16:00 |
| Iwanuma Gig Harbor | Pacific Time | 16:00 |
| Iwanuma Gilcrux | United Kingdom Time | 08:00 |
| Iwanuma Giessen | Central European Time | 07:00 |
| Iwanuma Ginosar | Israel Time | 06:00 |
| Iwanuma Gilze | Central European Time | 07:00 |
| Iwanuma Gillitts | South Africa Standard Time | 07:00 |
| Iwanuma Gilmer | Central Time | 14:00 |
| Iwanuma Giardini Naxos | Central European Time | 07:00 |
| Iwanuma Giaveno | Central European Time | 07:00 |
| Iwanuma Gibsons | Pacific Time | 16:00 |
| Iwanuma Ghent | Central European Time | 07:00 |
| Iwanuma Ghisoni | Central European Time | 07:00 |
| Iwanuma Ghent | Central European Time | 07:00 |
| Iwanuma Gharuan | India Standard Time | 03:30 |
| Iwanuma Ghan | Central Australia Time | -00:30 |
| Iwanuma Ghanoli | India Standard Time | 03:30 |
| Iwanuma Gwoździany | Central European Time | 07:00 |
| Iwanuma Gyeongju-si | Korean Time | 00:00 |
| Iwanuma Gymea | Eastern Australia Time | -01:00 |
| Iwanuma Gympie | Eastern Australia Time | -01:00 |
| Iwanuma Gisborne | Eastern Australia Time | -01:00 |
| Iwanuma Girraween | Eastern Australia Time | -01:00 |
| Iwanuma Gutach | Central European Time | 07:00 |
| Iwanuma Gustine | Pacific Time | 16:00 |
| Iwanuma Guthrie | Central Time | 14:00 |
| Iwanuma Gzira | Central European Time | 07:00 |
| Iwanuma Habarakada | India Standard Time | 03:30 |
| Iwanuma Hackettstown | Eastern Time | 13:00 |
| Iwanuma Kaprun | Central European Time | 07:00 |
| Iwanuma Kapolei | Hawaii-Aleutian Time | 19:00 |