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