| Joondalup Ilavala Hobli | India Standard Time | 02:30 |
| Joondalup Ileret | East Africa Time | 05:00 |
| Joondalup Ilford | United Kingdom Time | 07:00 |
| Joondalup Ilfracombe | United Kingdom Time | 07:00 |
| Joondalup Herve | Central European Time | 06:00 |
| Joondalup Herrin | Central Time | 13:00 |
| Joondalup Hershey | Eastern Time | 12:00 |
| Joondalup Herrera de Pisuerga | Central European Time | 06:00 |
| Joondalup Grafton | Central Time | 13:00 |
| Joondalup Gräfenhainichen | Central European Time | 06:00 |
| Joondalup Grafschaft | Central European Time | 06:00 |
| Joondalup Grafton | Eastern Australia Time | -02:00 |
| Joondalup Gramado | Brasilia Time | 11:00 |
| Joondalup Grambling | Central Time | 13:00 |
| Joondalup Graikas | Eastern European Time | 05:00 |
| Joondalup Goxhill | United Kingdom Time | 07:00 |
| Joondalup Govone | Central European Time | 06:00 |
| Joondalup Gort | Ireland Time | 07:00 |
| Joondalup Gosford | Eastern Australia Time | -02:00 |
| Joondalup Gossau | Central European Time | 06:00 |
| Joondalup Gote | India Standard Time | 02:30 |
| Joondalup Goult | Central European Time | 06:00 |
| Joondalup Gotha | Eastern Time | 12:00 |
| Joondalup Gothenburg | Central European Time | 06:00 |
| Joondalup Gothenburg | Central Time | 13:00 |
| Joondalup Freiburg | Central European Time | 06:00 |
| Joondalup Frenchtown | Eastern Time | 12:00 |
| Joondalup Fresnedillas de la Oliva | Central European Time | 06:00 |
| Joondalup Friedland | Central European Time | 06:00 |
| Joondalup Friedberg | Central European Time | 06:00 |
| Joondalup Friday Harbor | Pacific Time | 15:00 |
| Joondalup Frodsham | United Kingdom Time | 07:00 |
| Joondalup Fruitland Park | Eastern Time | 12:00 |
| Joondalup Frostburg | Eastern Time | 12:00 |
| Joondalup Friendsville | Eastern Time | 12:00 |
| Joondalup Gore | New Zealand Time | -04:00 |
| Joondalup Göreme Belediyesi | Turkey Time | 05:00 |
| Joondalup Gorey | Ireland Time | 07:00 |