The hour is a unit of time and is a multiple of an SI base unit with the symbol hr.
There are 60 seconds in a minute and 60 minutes in an hour. Consequently, there are 3600 seconds in an hour.
In a mean solar day, there are 24 hours.
Originally in the Middle East, the hour was defined as 1/12 of the day or night time. However, seasonal factors clearly affected all of these definitions and an average is used today to normalise and allow calculations.
The minute is a unit of time and is a multiple of an SI base unit with the symbol m.
There are 60 seconds in a minute. There are 60 minutes in an hour.
The Iranian scholar and polymath Al-Biruni who lived through the Islamic Golden Age (circa 1000 AD) was the first to split the hour sexagesimally (by 60) and introduced what we now understand as the “minute”.
It is understood in modern society to represent a relatively short amount of time – and is used very commonly in language to ask for a short break; hence the phrase “wait a minute”, “uno momento” and “un moment s’il vous plait”.