Conversion formula exactly how to convert 72 hours to days?

We know (by definition) that:1⁢hr≈0.041666667⁢d

We can collection up a proportion to resolve for the variety of days.

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Now, we cross multiply to settle for ours unknown x:




Conversion in the contrary direction

The inverse of the conversion factor is that 1 day is equal to 0.333333333333333 time 72 hours.

It can also be express as: 72 hrs is same to 1 0.333333333333333 days.


An almost right numerical result would be: seventy-two hrs is around zero days, or alternatively, a day is about zero point three 3 times seventy-two hours.

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Units involved

This is just how the systems in this conversion are defined:


"Midnight (or noon) top top a 12-hour analog clock an hour is a unit of time traditionally reckoned as 1⁄24 the a day and scientifically reckoned as 3,599–3,601 seconds, depending upon conditions.The seasonal, temporal, or unequal hour was developed in the old Near eastern as 1⁄12 that the night or daytime. Such hours varied through season, latitude, and weather. It to be subsequently separated into 60 minutes, each of 60 seconds. The East eastern equivalent was the shi, which to be 1⁄12 that the noticeable solar day; a similar system was eventually emerged in Europe i m sorry measured its same or equinoctial hour together 1⁄24 of together days measured native noon to noon. The minor variations of this unit were ultimately smoothed by making that 1⁄24 the the median solar day, based upon the measure of the suns transit along the celestial equator rather than along the ecliptic. This was lastly abandoned due to the boy slowing caused by the Earths tidal deceleration by the Moon.In the modern-day metric system, hrs are an accepted unit the time same to 3,600 seconds but an hour the Coordinated global Time (UTC) might incorporate a confident or negative leap second, make it critical 3,599 or 3,601 seconds, in order to store it in ~ 0.9 secs of global time, i m sorry is based on measurements that the mean solar day at 0° longitude."

Wikipedia web page of hours


"A job is a unit that time. In typical usage, the is either an interval same to 24 hrs or daytime, the consecutive duration of time during which the sun is over the horizon. The duration of time during which the earth completes one rotation through respect to the sunlight is referred to as a solar day. Several meanings of this global human ide are provided according to context, need and also convenience. In 1960, the second was redefined in regards to the orbital motion of the Earth, and was designated the SI base unit of time. The unit of measurement day, redefined in 1960 together 86 400 SI seconds and also symbolized d, is no an SI unit, but is accepted for use v SI. A polite day is normally 86 400 seconds, to add or minus a feasible leap second in Coordinated universal Time (UTC), and occasionally add to or minus an hour in those places that readjust from or come daylight saving time."

Wikipedia web page of days


<1> The precision is 15 significant digits (fourteen number to the ideal of the decimal point).