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