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
| 5PM to 10AM | 12PM to 10PM | 7PM to 3PM |
| 1AM to 3AM | 5PM to 10PM | 8PM to 6AM |
| 2AM to 11AM | 11AM to 9AM | 1PM to 8AM |
| 1AM to 11PM | 11PM to 6PM | 9PM to 3PM |
| 7PM to 4PM | 2AM to 7AM | 4AM to 9AM |
| 9AM to 10AM | 7AM to 4PM | 2AM to 12AM |
