| Abbreviation | Definition |
|---|---|
| DEN | Day Evening Night |
| DI | Dienstag |
| DMBW | DelMarVa Bike Week |
| DO | DOnnerstag |
| DOB | Day Of Brothers |
| DOV | Day Of Visibility |
| DOW | Day Of Week |
| DOY | Day Of Year |
| DRONE | Digitally Recording Our Nation's Existence |
| Dylmttt | Do you like mge tell the truth |
| ELLFW | Estonia & Latvia & Lithuania Frendship Week |
| ES | Easter Sunday |
| EuSu | EuroSunday |
| FAD | Financial Awareness Day |
| FD | Fiasco Day |
| FED | Free Enterprise Day |
| FF | Fat Friday |
| FKD | Favorite Kind of Day |
| FOJ | First Of June |
| FORD | Fails On Random Days |