| Eastern | Central | Mountain | Pacific | |
| 3 am | 2 am | 1 am | midnight | |
| 4 am | 3 am | 2 am | 1 am | |
| 5 am | 4 am | 3 am | 2 am | |
| 6 am | 5 am | 4 am | 3 am | |
| 7 am | 6 am | 5 am | 4 am | |
| 8 am | 7 am | 6 am | 5 am | |
| 9 am | 8 am | 7 am | 6 am | |
| 10 am | 9 am | 8 am | 7 am | |
| 11 am | 10 am | 9 am | 8 am | |
| Eastern | Central | Mountain | Pacific | |
| noon | 11 am | 10 am | 9 am | |
| 1 pm | noon | 11 am | 10 am | |
| 2 pm | 1 pm | noon | 11 am | |
| 3 pm | 2 pm | 1 pm | noon | |
| 4 pm | 3 pm | 2 pm | 1 pm | |
| 5 pm | 4 pm | 3 pm | 2 pm | |
| 6 pm | 5 pm | 4 pm | 3 pm | |
| 7 pm | 6 pm | 5 pm | 4 pm | |
| 8 pm | 7 pm | 6 pm | 5 pm | ACO RoundTable Calls |
| 9 pm | 8 pm | 7 pm | 6 pm | |
| 10 pm | 9 pm | 8 pm | 7 pm | |
| 11 pm | 10 pm | 9 pm | 8 pm | |
| midnight | 11 pm | 10 pm | 9 pm | |
| 1 am | midnight | 11 pm | 10 pm | |
| 2 am | 1 am | midnight | 11 pm |
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