| Columbia Falls Cunit | Central European Time | -08:00 |
| Columbia Falls Emu Plains | Eastern Australia Time | -16:00 |
| Columbia Falls Cuorgnè | Central European Time | -08:00 |
| Columbia Falls Empuriabrava | Central European Time | -08:00 |
| Columbia Falls Curral Velho | Cape Verde Time | -05:00 |
| Columbia Falls Emmaus | Eastern Time | -02:00 |
| Columbia Falls Currans Hill | Eastern Australia Time | -16:00 |
| Columbia Falls Enderby | Pacific Time | 01:00 |
| Columbia Falls Carhaix-Plouguer | Central European Time | -08:00 |
| Columbia Falls England | Eastern European Time | -09:00 |
| Columbia Falls Cardona | Central European Time | -08:00 |
| Columbia Falls Engelberg | Central European Time | -08:00 |
| Columbia Falls Cardonville | Central European Time | -08:00 |
| Columbia Falls Cardiff | Eastern Australia Time | -16:00 |
| Columbia Falls Cardigan | United Kingdom Time | -07:00 |
| Columbia Falls Caraz | Peru Time | -01:00 |
| Columbia Falls Cárcar | Central European Time | -08:00 |
| Columbia Falls Carbis Bay | United Kingdom Time | -07:00 |
| Columbia Falls Carleton Place | Eastern Time | -02:00 |
| Columbia Falls Carle Place | Eastern Time | -02:00 |
| Columbia Falls Carlingford | Ireland Time | -07:00 |
| Columbia Falls Carlin | Pacific Time | 01:00 |
| Columbia Falls Carlton | Eastern Australia Time | -16:00 |
| Columbia Falls Carlton North | Eastern Australia Time | -16:00 |
| Columbia Falls Carmel-by-the-Sea | Pacific Time | 01:00 |
| Columbia Falls Carnac | Central European Time | -08:00 |
| Columbia Falls Carnforth | United Kingdom Time | -07:00 |
| Columbia Falls Chippewa Falls | Central Time | -01:00 |
| Columbia Falls Chipping Campden | United Kingdom Time | -07:00 |
| Columbia Falls Chipping Norton | Eastern Australia Time | -16:00 |
| Columbia Falls Chinon | Central European Time | -08:00 |
| Columbia Falls Caroline Springs | Eastern Australia Time | -16:00 |
| Columbia Falls Carole Park | Eastern Australia Time | -16:00 |
| Columbia Falls Carolina Beach | Eastern Time | -02:00 |
| Columbia Falls Chilmark | Eastern Time | -02:00 |
| Columbia Falls Chiloquin | Pacific Time | 01:00 |
| Columbia Falls Chimney Rock | Eastern Time | -02:00 |
| Columbia Falls Chimgan | Uzbekistan Time | -11:00 |