There are total 1 hours or 60 minutes from 12am to 1am. In words, this duration is equal to one hours or sixty minutes.
How many hours from
| 9PM to 9AM | 4AM to 5PM | 10PM to 7AM |
| 12AM to 4AM | 4PM to 7AM | 2AM to 12PM |
| 6AM to 5PM | 11AM to 4PM | 12AM to 4AM |
| 7PM to 5AM | 5PM to 12PM | 7PM to 11AM |
| 4PM to 10PM | 8AM to 1PM | 10AM to 9AM |
| 7PM to 3PM | 10AM to 8AM | 5AM to 12AM |
