›› Convert royal foot to light day


royal foot
light day


›› More information from the unit converter

How many royal foot in 1 light day? The answer is 79737780225748.
We assume you are converting between royal foot and light day.
You can view more details on each measurement unit:
royal foot or light day
The SI base unit for length is the metre.
1 metre is equal to 3.0784329298739 royal foot, or 3.8606955462749E-14 light day.
Note that rounding errors may occur, so always check the results.
Use this page to learn how to convert between royal feet and light days.
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›› Definition: Light-day

A light day (also written light-day) is a unit of length. It is defined as the distance light travels in an absolute vacuum in one day (of 86,400 seconds) or 25,902,068,371,200 metres (~26 Tm).

Note that this value is exact, since the metre is actually defined in terms of the speed of light. The light day isn't very frequently used at all since there are few astronomical objects or distances of that magnitude; the Oort cloud, for example, is thought to extend between 290 and 580 light-days out from the Sun.


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