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