There are total 15 hours or 900 minutes from 1am to 4pm. In words, this duration is equal to fifteen hours or nine hundred minutes.
How many hours from
| 7PM to 2AM | 12AM to 5PM | 2AM to 1PM |
| 6PM to 5AM | 6AM to 11PM | 2PM to 3AM |
| 11PM to 3PM | 6AM to 8PM | 1PM to 7PM |
| 7PM to 6AM | 5AM to 1PM | 3PM to 6AM |
| 1PM to 7PM | 6PM to 4AM | 4AM to 5AM |
| 2PM to 5PM | 4AM to 11PM | 12AM to 1AM |
