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