There are total 15 hours or 900 minutes from 10am to 1am. In words, this duration is equal to fifteen hours or nine hundred minutes.
How many hours from
| 1AM to 6PM | 3AM to 1AM | 2AM to 7AM |
| 8PM to 6PM | 6PM to 1AM | 2PM to 3PM |
| 10PM to 6AM | 12AM to 7AM | 1PM to 7PM |
| 2PM to 6PM | 11PM to 7AM | 1PM to 10AM |
| 10AM to 2PM | 3PM to 4AM | 12AM to 9AM |
| 4AM to 8PM | 9PM to 6AM | 9PM to 2AM |
