| Greensburg Clackamas | Pacific Time | 02:00 |
| Greensburg Dadra | India Standard Time | -10:30 |
| Greensburg Dade City | Eastern Time | -01:00 |
| Greensburg Dabaspete | India Standard Time | -10:30 |
| Greensburg Cyberjaya | Malaysia Time | -13:00 |
| Greensburg Cygnet | Eastern Australia Time | -15:00 |
| Greensburg Cumming | Eastern Time | -01:00 |
| Greensburg Cunit | Central European Time | -07:00 |
| Greensburg Cuorgnè | Central European Time | -07:00 |
| Greensburg Curral Velho | Cape Verde Time | -04:00 |
| Greensburg Currans Hill | Eastern Australia Time | -15:00 |
| Greensburg City of Orange | Eastern Time | -01:00 |
| Greensburg City of Industry | Pacific Time | 02:00 |
| Greensburg Città Sant'Angelo | Central European Time | -07:00 |
| Greensburg Cittadella | Central European Time | -07:00 |
| Greensburg Ciudad de la Costa | Uruguay Time | -02:00 |
| Greensburg Ciudad de México | Central Time | 00:00 |
| Greensburg Ciudad Colón | Central Time | 01:00 |
| Greensburg Ciudad General Escobedo | Central Time | 00:00 |
| Greensburg Castellamonte | Central European Time | -07:00 |
| Greensburg Castelnau-de-Montmiral | Central European Time | -07:00 |
| Greensburg Castelsardo | Central European Time | -07:00 |
| Greensburg Cisnădioara | Eastern European Time | -08:00 |
| Greensburg Castanet-Tolosan | Central European Time | -07:00 |
| Greensburg Cassis | Central European Time | -07:00 |
| Greensburg Castagneto Carducci | Central European Time | -07:00 |
| Greensburg Cassà de la Selva | Central European Time | -07:00 |
| Greensburg Casselman | Eastern Time | -01:00 |
| Greensburg Carpinteria | Pacific Time | 02:00 |
| Greensburg Buena | Eastern Time | -01:00 |
| Greensburg Carovigno | Central European Time | -07:00 |
| Greensburg Carrouge | Central European Time | -07:00 |
| Greensburg Carvoeiro | Western European Time | -06:00 |
| Greensburg Casale Marittimo | Central European Time | -07:00 |
| Greensburg Casaletto Ceredano | Central European Time | -07:00 |
| Greensburg Caslano | Central European Time | -07:00 |
| Greensburg Casillas | Central European Time | -07:00 |
| Greensburg Caselle Torinese | Central European Time | -07:00 |