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