There are total 21 hours or 1260 minutes from 1am to 10pm. In words, this duration is equal to twenty-one hours or one thousand two hundred sixty minutes.
How many hours from
| 12PM to 2AM | 5AM to 2AM | 3PM to 11PM |
| 9AM to 11PM | 9PM to 11PM | 5PM to 4PM |
| 3PM to 12PM | 7AM to 12PM | 4AM to 1AM |
| 12AM to 3PM | 11AM to 5PM | 3AM to 10AM |
| 3PM to 10AM | 7PM to 12PM | 2PM to 1PM |
| 12AM to 6PM | 5PM to 11AM | 11PM to 11AM |
