There are total 21 hours or 1260 minutes from 12pm to 9am. In words, this duration is equal to twenty-one hours or one thousand two hundred sixty minutes.
How many hours from
| 1AM to 4PM | 7AM to 12PM | 12AM to 11PM |
| 2AM to 1AM | 9PM to 5PM | 11AM to 4AM |
| 9PM to 7PM | 2PM to 4PM | 8AM to 1AM |
| 3PM to 4PM | 11AM to 6AM | 11AM to 3AM |
| 6PM to 2PM | 1PM to 4AM | 7PM to 5PM |
| 3AM to 11PM | 8AM to 6PM | 4AM to 6PM |
