There are total 7 hours or 420 minutes from 6pm to 1am. In words, this duration is equal to seven hours or four hundred twenty minutes.
How many hours from
| 9PM to 3AM | 9AM to 5AM | 1AM to 6AM |
| 6PM to 7PM | 9PM to 4AM | 4PM to 3AM |
| 1AM to 9AM | 2PM to 5AM | 10AM to 11AM |
| 10PM to 5PM | 9PM to 6PM | 9PM to 4AM |
| 3AM to 9AM | 10PM to 7PM | 11AM to 6PM |
| 5PM to 12AM | 6PM to 10AM | 9PM to 12AM |
