| Changzhou Hong | Central European Time | 07:00 |
| Changzhou Hong Kong | Hong Kong Time | 00:00 |
| Changzhou Hong Kong | Hong Kong Time | 00:00 |
| Changzhou Hong Kong | Hong Kong Time | 00:00 |
| Changzhou Hounslow | United Kingdom Time | 08:00 |
| Changzhou Hotchkiss | Mountain Time | 15:00 |
| Changzhou Hoylake | United Kingdom Time | 08:00 |
| Changzhou Howell | Eastern Time | 13:00 |
| Changzhou Howrah | India Standard Time | 02:30 |
| Changzhou Hoxie | Central Time | 14:00 |
| Changzhou Huanggang | China Time | 00:00 |
| Changzhou Huajuapan de León | Central Time | 14:00 |
| Changzhou Himmelkron | Central European Time | 07:00 |
| Changzhou Hima | East Africa Time | 05:00 |
| Changzhou Hillsborough | Eastern Time | 13:00 |
| Changzhou Hioki | Japan Time | -01:00 |
| Changzhou Hiram | Eastern Time | 13:00 |
| Changzhou Hingham | Eastern Time | 13:00 |
| Changzhou Hochdorf | Central European Time | 07:00 |
| Changzhou Hitzacker | Central European Time | 07:00 |
| Changzhou Homebush | Eastern Australia Time | -03:00 |
| Changzhou Hondarribia | Central European Time | 07:00 |
| Changzhou Homps | Central European Time | 07:00 |
| Changzhou Holywood | United Kingdom Time | 08:00 |
| Changzhou Holmes Beach | Eastern Time | 13:00 |
| Changzhou Holme's Hill | United Kingdom Time | 08:00 |
| Changzhou Hollywood | Eastern Time | 13:00 |
| Changzhou Holly Hill | Eastern Time | 13:00 |
| Changzhou Holly Hill | Eastern Time | 13:00 |
| Changzhou Hokes Bluff | Central Time | 14:00 |
| Changzhou Hokuto | Japan Time | -01:00 |
| Changzhou Holden Hill | Central Australia Time | -02:30 |
| Changzhou Holdenville | Central Time | 14:00 |
| Changzhou Holdorf | Central European Time | 07:00 |
| Changzhou Holdrege | Central Time | 14:00 |
| Changzhou Holesov | Central European Time | 07:00 |
| Changzhou Holgate | Eastern Australia Time | -03:00 |
| Changzhou Hogsback | South Africa Standard Time | 06:00 |
| Changzhou Hofheim | Central European Time | 07:00 |
| Changzhou Hoge Hexel | Central European Time | 07:00 |
| Changzhou Heubach | Central European Time | 07:00 |
| Changzhou Hethersett | United Kingdom Time | 08:00 |
| Changzhou Hewlett | Eastern Time | 13:00 |
| Changzhou Hexham | Eastern Australia Time | -03:00 |
| Changzhou Hexham | United Kingdom Time | 08:00 |
| Changzhou Heydon | United Kingdom Time | 08:00 |
| Changzhou Highgate | Western Australia Time | 00:00 |
| Changzhou High Falls | Eastern Time | 13:00 |
| Changzhou Higashiyama Ward | Japan Time | -01:00 |
| Changzhou Higashi Ward | Japan Time | -01:00 |