There are total 4 hours or 240 minutes from 9am to 1pm. In words, this duration is equal to four hours or two hundred forty minutes.
How many hours from
| 4PM to 8PM | 9AM to 10AM | 10AM to 12PM |
| 4AM to 6AM | 8PM to 1PM | 4PM to 9AM |
| 10PM to 10AM | 1AM to 9PM | 11PM to 10PM |
| 8AM to 9PM | 7PM to 6PM | 12PM to 12AM |
| 8AM to 11PM | 11AM to 7AM | 3PM to 11AM |
| 12AM to 6AM | 12PM to 1PM | 1AM to 9PM |
