72 hours equals 3 days, or three days equal 72 hours. Divide 72 by 24 to convert hours to days.

What Is the Definition of a Day?

One day is the time it takes for the Earth to complete one rotation. So 86,400 seconds to the second is the definition.

A 24-hour division of time represents the average length of time it takes for the Earth to complete one rotation on its axis. It is also known as a solar day.

How to Calculate Days to Hours

The term 72 hr. is often used for the amount of time being converted, while "d" is sometimes used for the result in days.

The result of the time conversion 72 hr. to d and the arithmetic explained in-depth and relevant information such as the time in related units could be found here.

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