There are total 20 hours or 1200 minutes from 12am to 8pm. In words, this duration is equal to twenty hours or one thousand two hundred minutes.
How many hours from
| 9AM to 4PM | 1AM to 6PM | 9AM to 7PM |
| 3PM to 7AM | 5AM to 10PM | 3AM to 7AM |
| 3AM to 5AM | 4AM to 9AM | 7AM to 6PM |
| 5PM to 1AM | 6AM to 1PM | 5PM to 12AM |
| 8AM to 7PM | 12AM to 12PM | 1AM to 12AM |
| 2PM to 3AM | 9AM to 7AM | 7PM to 5AM |
