There are total 21 hours or 1260 minutes from 8am to 5am. In words, this duration is equal to twenty-one hours or one thousand two hundred sixty minutes.
How many hours from
| 1PM to 6PM | 11AM to 1AM | 8PM to 9PM |
| 10PM to 1PM | 4PM to 7AM | 9PM to 12PM |
| 8PM to 10AM | 10PM to 4AM | 5PM to 9AM |
| 6PM to 7AM | 4PM to 10PM | 10PM to 8AM |
| 12PM to 9AM | 9AM to 3PM | 6AM to 5PM |
| 11PM to 1PM | 6PM to 2PM | 7AM to 1PM |
