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