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