›› Convert gigametre to light day


gigameter
light-day


›› More information from the unit converter

How many gigameter in 1 light-day? The answer is 25902.0683712.
We assume you are converting between gigametre and light day.
You can view more details on each measurement unit:
gigameter or light-day
The SI base unit for length is the metre.
1 metre is equal to 1.0E-9 gigameter, 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 gigameters and light days.
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›› Definition: Gigameter

A gigametre (American spelling: gigameter, symbol: Gm) is a unit of length equal to 10^9 metres. Its customary equivalent is 621,371 miles.


›› 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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