There are total 19 hours or 1140 minutes from 9am to 4am. In words, this duration is equal to nineteen hours or one thousand one hundred forty minutes.
How many hours from
| 1AM to 12AM | 6PM to 9PM | 10PM to 1PM |
| 2AM to 4AM | 1AM to 5AM | 3PM to 7PM |
| 1AM to 1PM | 6PM to 1PM | 4AM to 8AM |
| 11AM to 1AM | 8AM to 12AM | 6AM to 7AM |
| 11AM to 3PM | 5AM to 1PM | 10PM to 3AM |
| 10AM to 9AM | 12AM to 2PM | 7PM to 1AM |
