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