Full name: light hour
Plural form: light hours
Alternate spelling: lighthour
Category type: length
Scale factor: 1079252848800
The SI base unit for length is the metre.
1 metre is equal to 9.26566931106E-13 light hour.
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A light-hour (also written light hour) is a unit of length. It is the distance travelled by light in vacuum in one hour. Based on the current definition of the metre a light-hour is equal to 1,079,252,848,800 metres (~1.08 Tm).