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