There are total 3 hours or 180 minutes from 10pm to 1am. In words, this duration is equal to three hours or one hundred eighty minutes.
How many hours from
| 9AM to 5PM | 4AM to 2PM | 8PM to 4AM |
| 10PM to 2PM | 9AM to 7PM | 9AM to 5PM |
| 8AM to 9AM | 5PM to 9AM | 3AM to 3PM |
| 9AM to 2AM | 12AM to 1PM | 4PM to 12AM |
| 1PM to 10PM | 1AM to 9PM | 1AM to 5AM |
| 9PM to 12AM | 4PM to 8AM | 9AM to 2AM |
