There are total 3 hours or 180 minutes from 10am to 1pm. In words, this duration is equal to three hours or one hundred eighty minutes.
How many hours from
| 1PM to 9PM | 9AM to 5PM | 8AM to 9PM |
| 12PM to 1AM | 11PM to 12PM | 4AM to 4PM |
| 8PM to 5PM | 5AM to 6AM | 10PM to 11AM |
| 12PM to 3AM | 9AM to 8PM | 12AM to 6AM |
| 3AM to 2AM | 11PM to 6AM | 8PM to 5AM |
| 8AM to 11AM | 6PM to 10PM | 4PM to 8PM |
