›› Convert metre to light day


meter
light-day


›› More information from the unit converter

How many meter in 1 light-day? The answer is 25902068371200.
We assume you are converting between metre and light day.
You can view more details on each measurement unit:
meter or light-day
The SI base unit for length is the metre.
1 metre is equal to 1 meter, 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 metres and light days.
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›› Definition: Meter

The metre, symbol: m, is the basic unit of distance (or of "length", in the parlance of the physical sciences) in the International System of Units. The internationally-accepted spelling of the unit in English is "metre", although the American English spelling meter is a common variant. However, both American and non-American forms of English agree that the spelling "meter" should be used as a suffix in the names of measuring devices such as chronometers and micrometers.


›› 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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