There are total 21 hours or 1260 minutes from 1pm to 10am. In words, this duration is equal to twenty-one hours or one thousand two hundred sixty minutes.
How many hours from
| 8AM to 4PM | 4AM to 2PM | 7PM to 3PM |
| 9PM to 9AM | 6PM to 4PM | 2PM to 12AM |
| 10AM to 11AM | 4PM to 2AM | 8PM to 1AM |
| 1PM to 10AM | 3AM to 2AM | 8AM to 4PM |
| 3AM to 11AM | 12PM to 9AM | 12PM to 12AM |
| 11PM to 12PM | 6PM to 8PM | 8AM to 11PM |
