There are total 20 hours or 1200 minutes from 7am to 3am. In words, this duration is equal to twenty hours or one thousand two hundred minutes.
How many hours from
| 4AM to 10PM | 10AM to 7PM | 2AM to 4AM |
| 8AM to 3PM | 9PM to 9AM | 9AM to 3AM |
| 10PM to 6PM | 1AM to 10PM | 11AM to 1PM |
| 10AM to 6AM | 3AM to 9AM | 4PM to 1PM |
| 11AM to 8PM | 9AM to 2AM | 4PM to 7AM |
| 6PM to 7AM | 12PM to 4AM | 10PM to 7PM |
