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