A civil day has _______ hours _______ seconds.

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There answer is not clear. It is confusing.

The question is not clear to me! A day is a day -- 24 hours, 12:00 am to 11:59 pm. I don't understand why "civil" is included here.

A civil day has 24 hours and 86,400 seconds.

To understand why a civil day has 24 hours, it is important to know about the concept of time measurement. The modern system of timekeeping is based on the Earth's rotation. The time it takes for the Earth to complete one full rotation on its axis is approximately 24 hours. This period of time is divided into 24 equal parts, resulting in each hour being 1/24th of a day.

To convert hours to seconds, we multiply the number of hours by the number of seconds in one hour. Since there are 60 minutes in one hour and 60 seconds in one minute, the total number of seconds in an hour is 60 x 60 = 3600 seconds. Therefore, to calculate the number of seconds in a day, we multiply 24 hours by 3600 seconds, resulting in 24 x 3600 = 86,400 seconds.

In summary, a civil day has 24 hours and 86,400 seconds.