There are total 7 hours or 420 minutes from 1am to 8am. In words, this duration is equal to seven hours or four hundred twenty minutes.
How many hours from
| 5AM to 6PM | 4PM to 8AM | 6AM to 11PM |
| 2PM to 7AM | 10PM to 2AM | 7PM to 12AM |
| 4AM to 2PM | 4AM to 2PM | 2PM to 3PM |
| 1PM to 11AM | 10AM to 3PM | 4AM to 2AM |
| 3AM to 11AM | 12AM to 3PM | 7AM to 6PM |
| 7PM to 11AM | 11AM to 7AM | 2PM to 1AM |
