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