| Answer | Crossword Clue |
|---|---|
| HALFADAY | 12 hours |
| TWICEADAY | Every 12 hours |
| LONGDAY | 12 hours at work, maybe |
| DOSAGE | Two tablets every 12 hours, say |
| THEUNITEDSTATES | Fastest ocean liner ever in a transatlantic crossing (3 days, 12 hours, 12 minutes) |
| lunation | the period of time averaging 29 days, 12 hours, 44 minutes, and 2.8 seconds elapsing between two successive new moons |
