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 8AM | 3PM to 6PM | 8PM to 7PM |
| 7PM to 11AM | 10AM to 2AM | 6AM to 5PM |
| 11PM to 8AM | 7AM to 6AM | 3AM to 9PM |
| 4PM to 6AM | 9PM to 4AM | 12AM to 12PM |
| 11AM to 4PM | 9PM to 7PM | 1AM to 4PM |
| 3AM to 8AM | 8PM to 5AM | 4PM to 6PM |
