Convert between Hour and other Time units.
What is the hour?
The hour is a unit of time. It can be symbolized as hr. It equals 1/24 of a day. It also can be defined as 3600 seconds or 60 minutes.
Time can be measured according to two schemes:
- 24-hour time scheme which starts and ends at midnight.
- Two 12-hr segments per mean solar day ( A.M and P.M).
The first scheme is the most common scheme that is used by engineers and astronomers