| Byford Harrison Hot Springs | Pacific Time | 16:00 |
| Byford Harrison | Central Time | 14:00 |
| Byford Harwich | Eastern Time | 13:00 |
| Byford Harrodsburg | Eastern Time | 13:00 |
| Byford Harrow | United Kingdom Time | 08:00 |
| Byford Hartsdale | Eastern Time | 13:00 |
| Byford Hartselle | Central Time | 14:00 |
| Byford Hartshorne | Central Time | 14:00 |
| Byford Hartsville | Eastern Time | 13:00 |
| Byford Hartville | Eastern Time | 13:00 |
| Byford Harfleur | Central European Time | 07:00 |
| Byford Hardys Bay | Eastern Australia Time | -03:00 |
| Byford Harburg | Central European Time | 07:00 |
| Byford Hanwood | Eastern Australia Time | -03:00 |
| Byford Hanumanbari | India Standard Time | 02:30 |
| Byford Happy Valley | Pacific Time | 16:00 |
| Byford Hanover | Eastern Time | 13:00 |
| Byford Hang Dong | Indochina Time | 01:00 |
| Byford Handsworth Wood | United Kingdom Time | 08:00 |
| Byford Handforth | United Kingdom Time | 08:00 |
| Byford Hanamkonda | India Standard Time | 02:30 |
| Byford Hanau | Central European Time | 07:00 |
| Byford Hamilton | Eastern Australia Time | -03:00 |
| Byford Hämeenkyrö | Eastern European Time | 06:00 |
| Byford Hamilton Township | Eastern Time | 13:00 |
| Byford Hammerfest | Central European Time | 07:00 |
| Byford Hammersbach | Central European Time | 07:00 |
| Byford Hampton | Eastern Australia Time | -03:00 |
| Byford Hammonton | Eastern Time | 13:00 |
| Byford Hampi | India Standard Time | 02:30 |
| Byford Hammamet Sud | Central European Time | 07:00 |
| Byford Hammamet | Central European Time | 07:00 |
| Byford Halli | Eastern European Time | 06:00 |
| Byford Hallsville | Central Time | 14:00 |
| Byford Hallam | Eastern Australia Time | -03:00 |
| Byford Halifax | Eastern Time | 13:00 |
| Byford Halton Hills | Eastern Time | 13:00 |
| Byford Hamburg | Central European Time | 07:00 |
| Byford Hadleigh | United Kingdom Time | 08:00 |
| Byford Hagenow | Central European Time | 07:00 |
| Byford Hagenthal-le-Haut | Central European Time | 07:00 |
| Byford Hahndorf | Central Australia Time | -02:30 |
| Byford HaGoshrim | Israel Time | 06:00 |
| Byford Haiku-Pauwela | Hawaii-Aleutian Time | 18:00 |
| Byford Haleiwa | Hawaii-Aleutian Time | 18:00 |
| Byford Hales Corners | Central Time | 14:00 |
| Byford Half Moon Bay | Pacific Time | 16:00 |
| Byford Haldensleben | Central European Time | 07:00 |
| Byford Hakone | Japan Time | -01:00 |
| Byford Hakata Ward | Japan Time | -01:00 |