Clock is a unit of time. The length of an hour is 1/24 (one twenty-four) of the day. An hour can be divided into even smaller units of time. One hour consists of:
60 minutes
3600 seconds
Hit also shows the unit of time. Hour means "time or period", while o'clock means "time or time" [1]. In Indonesian, if you want to express "time or time", the word 'o'clock' is used (example: Going to school at 6.00). When expressing "time or period", use the word 'hour' (example: At school for eight hours).