| River Forest Big Bear Lake | Pacific Time | 02:00 |
| River Forest Kühlungsborn | Central European Time | -07:00 |
| River Forest Big Pine Key | Eastern Time | -01:00 |
| River Forest Kukkundoor | India Standard Time | -11:30 |
| River Forest Big Sky | Mountain Time | 01:00 |
| River Forest Kullu | India Standard Time | -11:30 |
| River Forest Bijainagar | India Standard Time | -11:30 |
| River Forest Kundapur | India Standard Time | -11:30 |
| River Forest Billakempanahalli | India Standard Time | -11:30 |
| River Forest Kumbla (Kumble) | India Standard Time | -11:30 |
| River Forest Bilthoven | Central European Time | -07:00 |
| River Forest Kumily | India Standard Time | -11:30 |
| River Forest Kuluin | Eastern Australia Time | -16:00 |
| River Forest Kuala Sepetang | Malaysia Time | -14:00 |
| River Forest Kuala Lumpur | Malaysia Time | -14:00 |
| River Forest Kuala Lumpur | Malaysia Time | -14:00 |
| River Forest Kuala Lumpur | Malaysia Time | -14:00 |
| River Forest Kuala Lumpur | Malaysia Time | -14:00 |
| River Forest Kuala Perlis | Malaysia Time | -14:00 |
| River Forest Kuala Ketil | Malaysia Time | -14:00 |
| River Forest Kuala Berang | Malaysia Time | -14:00 |
| River Forest Kudasan | India Standard Time | -11:30 |
| River Forest Kubang Semang | Malaysia Time | -14:00 |
| River Forest Kiama | Eastern Australia Time | -17:00 |
| River Forest Kianly | Turkmenistan Time | -11:00 |
| River Forest Khurais | Arabian Time | -09:00 |
| River Forest Kafra | Eastern European Time | -08:00 |
| River Forest Kagawa-gun | Japan Time | -15:00 |
| River Forest Kaghan | Pakistan Time | -11:00 |
| River Forest Kadima Zoran | Israel Time | -08:00 |
| River Forest Kadapa | India Standard Time | -11:30 |
| River Forest Kadapra | India Standard Time | -11:30 |
| River Forest Kadambur | India Standard Time | -11:30 |
| River Forest Khetri Nagar | India Standard Time | -11:30 |
| River Forest Khimsar | India Standard Time | -11:30 |
| River Forest Khatiwali | India Standard Time | -11:30 |
| River Forest Khelil | Central European Time | -07:00 |
| River Forest Kahuku | Hawaii-Aleutian Time | 04:00 |