## Convert light day to yottametre

 light-day yottameter

How many light-day in 1 yottameter? The answer is 38606955462.749. We assume you are converting between light day and yottametre. You can view more details on each measurement unit: light-day or yottameter The SI base unit for length is the metre. 1 metre is equal to 3.8606955462749E-14 light-day, or 1.0E-24 yottameter. Note that rounding errors may occur, so always check the results. Use this page to learn how to convert between light days and yottameters. Type in your own numbers in the form to convert the units!

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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.

## Definition: Yottametre

The SI prefix "yotta" represents a factor of 1024, or in exponential notation, 1E24.

So 1 yottametre = 1024 metre.

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