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