Code Table 4: Unit of time
Code tables
| Code | Meaning |
| 0 | Minute |
| 1 | Hour |
| 2 | Day |
| 3 | Month |
| 4 | Year |
| 5 | Decade (10 years) |
| 6 | Normal (30 years) |
| 7 | Century (100 years) |
| 8-9 | Reserved |
| 10 | 3 hours |
| 11 | 6 hours |
| 12 | 12 hours |
| 13 | Quarter of an hour |
| 14 | Half an hour |
| 15-253 | Reserved |
| 254 | Second |