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