| Abbreviation | Definition |
|---|---|
| COT | Colombia Time |
| CST | Central Standard Time |
| CST | Central Standard Time [UTC - 0600] |
| CST | China Standard Time |
| CST | Cuba Standard Time |
| CT | Central Time [UTC - 0600] |
| CT | Current Time |
| CUT | INCORRECT abbreviation for Coordinated Universal Time (see UTC) |
| CVT | Cape Verde Time |
| CXT | Christmas Island Time |
| D/T | Date and Time |
| DAVT | Davis Time |
| DDST | Double Daylight Saving Time |
| DLS | DayLight Savings |
| DOM | Dawn Of Morning |
| DST | Danish Standard Time |
| DST | Daylight Saving Time |
| DST | Daylight Savings Time |
| DST | Daylight-Savings Time |
| DST | Dkoro Standard Time |