There are total 20 hours or 1200 minutes from 1pm to 9am. In words, this duration is equal to twenty hours or one thousand two hundred minutes.
How many hours from
| 12AM to 10AM | 10PM to 11AM | 2PM to 10AM |
| 2AM to 7PM | 8AM to 11PM | 8PM to 4AM |
| 4AM to 2PM | 1PM to 6PM | 8AM to 6PM |
| 9AM to 2AM | 12AM to 7PM | 5PM to 6AM |
| 7AM to 4AM | 6AM to 2PM | 11PM to 8PM |
| 12PM to 12AM | 12AM to 7PM | 12AM to 12PM |
