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