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