There are total 21 hours or 1260 minutes from 4pm to 1pm. In words, this duration is equal to twenty-one hours or one thousand two hundred sixty minutes.
How many hours from
| 7PM to 1AM | 3AM to 5PM | 10AM to 4PM |
| 6PM to 3AM | 1AM to 3AM | 12AM to 1PM |
| 1PM to 2PM | 3AM to 1AM | 1PM to 3PM |
| 11AM to 3AM | 10AM to 12AM | 11PM to 12PM |
| 2AM to 5PM | 10AM to 6PM | 3AM to 8AM |
| 7AM to 1AM | 10AM to 4PM | 5AM to 1AM |
