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