| Siegen Harrison Hot Springs | Pacific Time | 09:00 |
| Siegen Harrison | Central Time | 07:00 |
| Siegen Harwich | Eastern Time | 06:00 |
| Siegen Harrodsburg | Eastern Time | 06:00 |
| Siegen Harrow | United Kingdom Time | 01:00 |
| Siegen Hartsdale | Eastern Time | 06:00 |
| Siegen Hartselle | Central Time | 07:00 |
| Siegen Hartshorne | Central Time | 07:00 |
| Siegen Hartsville | Eastern Time | 06:00 |
| Siegen Hartville | Eastern Time | 06:00 |
| Siegen Harfleur | Central European Time | 00:00 |
| Siegen Hardys Bay | Eastern Australia Time | -10:00 |
| Siegen Harburg | Central European Time | 00:00 |
| Siegen Hanwood | Eastern Australia Time | -10:00 |
| Siegen Hanumanbari | India Standard Time | -04:30 |
| Siegen Happy Valley | Pacific Time | 09:00 |
| Siegen Hanover | Eastern Time | 06:00 |
| Siegen Hang Dong | Indochina Time | -06:00 |
| Siegen Handsworth Wood | United Kingdom Time | 01:00 |
| Siegen Handforth | United Kingdom Time | 01:00 |
| Siegen Hanamkonda | India Standard Time | -04:30 |
| Siegen Hanau | Central European Time | 00:00 |
| Siegen Hamilton | Eastern Australia Time | -10:00 |
| Siegen Hämeenkyrö | Eastern European Time | -01:00 |
| Siegen Hamilton Township | Eastern Time | 06:00 |
| Siegen Hammerfest | Central European Time | 00:00 |
| Siegen Hammersbach | Central European Time | 00:00 |
| Siegen Hampton | Eastern Australia Time | -10:00 |
| Siegen Hammonton | Eastern Time | 06:00 |
| Siegen Hampi | India Standard Time | -04:30 |
| Siegen Hammamet Sud | Central European Time | 00:00 |
| Siegen Hammamet | Central European Time | 00:00 |
| Siegen Halli | Eastern European Time | -01:00 |
| Siegen Hallsville | Central Time | 07:00 |
| Siegen Hallam | Eastern Australia Time | -10:00 |
| Siegen Halifax | Eastern Time | 06:00 |
| Siegen Halton Hills | Eastern Time | 06:00 |
| Siegen Hamburg | Central European Time | 00:00 |
| Siegen Hadleigh | United Kingdom Time | 01:00 |
| Siegen Hagenow | Central European Time | 00:00 |
| Siegen Hagenthal-le-Haut | Central European Time | 00:00 |
| Siegen Hahndorf | Central Australia Time | -09:30 |
| Siegen HaGoshrim | Israel Time | -01:00 |
| Siegen Haiku-Pauwela | Hawaii-Aleutian Time | 11:00 |
| Siegen Haleiwa | Hawaii-Aleutian Time | 11:00 |
| Siegen Hales Corners | Central Time | 07:00 |
| Siegen Half Moon Bay | Pacific Time | 09:00 |
| Siegen Haldensleben | Central European Time | 00:00 |
| Siegen Hakone | Japan Time | -08:00 |
| Siegen Hakata Ward | Japan Time | -08:00 |