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
| 3PM to 2PM | 5AM to 8AM | 6AM to 7AM |
| 6PM to 5PM | 1AM to 6PM | 12AM to 8AM |
| 6AM to 3PM | 10AM to 4PM | 9AM to 10PM |
| 12PM to 11PM | 7PM to 11AM | 1AM to 12AM |
| 6AM to 11AM | 8PM to 1AM | 6AM to 11AM |
| 10PM to 9AM | 3PM to 2AM | 12AM to 12PM |
