| Jacksonville Harrison Hot Springs | Pacific Time | 03:00 |
| Jacksonville Harrison | Central Time | 01:00 |
| Jacksonville Harwich | Eastern Time | 00:00 |
| Jacksonville Harrodsburg | Eastern Time | 00:00 |
| Jacksonville Harrow | United Kingdom Time | -05:00 |
| Jacksonville Hartsdale | Eastern Time | 00:00 |
| Jacksonville Hartselle | Central Time | 01:00 |
| Jacksonville Hartshorne | Central Time | 01:00 |
| Jacksonville Hartsville | Eastern Time | 00:00 |
| Jacksonville Hartville | Eastern Time | 00:00 |
| Jacksonville Harfleur | Central European Time | -06:00 |
| Jacksonville Hardys Bay | Eastern Australia Time | -16:00 |
| Jacksonville Harburg | Central European Time | -06:00 |
| Jacksonville Hanwood | Eastern Australia Time | -16:00 |
| Jacksonville Hanumanbari | India Standard Time | -10:30 |
| Jacksonville Happy Valley | Pacific Time | 03:00 |
| Jacksonville Hanover | Eastern Time | 00:00 |
| Jacksonville Hang Dong | Indochina Time | -12:00 |
| Jacksonville Handsworth Wood | United Kingdom Time | -05:00 |
| Jacksonville Handforth | United Kingdom Time | -05:00 |
| Jacksonville Hanamkonda | India Standard Time | -10:30 |
| Jacksonville Hanau | Central European Time | -06:00 |
| Jacksonville Hamilton | Eastern Australia Time | -16:00 |
| Jacksonville Hämeenkyrö | Eastern European Time | -07:00 |
| Jacksonville Hamilton Township | Eastern Time | 00:00 |
| Jacksonville Hammerfest | Central European Time | -06:00 |
| Jacksonville Hammersbach | Central European Time | -06:00 |
| Jacksonville Hampton | Eastern Australia Time | -16:00 |
| Jacksonville Hammonton | Eastern Time | 00:00 |
| Jacksonville Hampi | India Standard Time | -10:30 |
| Jacksonville Hammamet Sud | Central European Time | -06:00 |
| Jacksonville Hammamet | Central European Time | -06:00 |
| Jacksonville Halli | Eastern European Time | -07:00 |
| Jacksonville Hallsville | Central Time | 01:00 |
| Jacksonville Hallam | Eastern Australia Time | -16:00 |
| Jacksonville Halifax | Eastern Time | 00:00 |
| Jacksonville Halton Hills | Eastern Time | 00:00 |
| Jacksonville Hamburg | Central European Time | -06:00 |
| Jacksonville Hadleigh | United Kingdom Time | -05:00 |
| Jacksonville Hagenow | Central European Time | -06:00 |
| Jacksonville Hagenthal-le-Haut | Central European Time | -06:00 |
| Jacksonville Hahndorf | Central Australia Time | -15:30 |
| Jacksonville HaGoshrim | Israel Time | -07:00 |
| Jacksonville Haiku-Pauwela | Hawaii-Aleutian Time | 05:00 |
| Jacksonville Haleiwa | Hawaii-Aleutian Time | 05:00 |
| Jacksonville Hales Corners | Central Time | 01:00 |
| Jacksonville Half Moon Bay | Pacific Time | 03:00 |
| Jacksonville Haldensleben | Central European Time | -06:00 |
| Jacksonville Hakone | Japan Time | -14:00 |
| Jacksonville Hakata Ward | Japan Time | -14:00 |