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