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A light year is the distance that light will travel in a vacuum in a year. Nothing can travel that distance in an hour so a lightyear per hour is a meaningless concept of speed.

Though impossible to attain, it is a measure of speed while a kilometre is a measure of distance. There is no direct relationship between the two.

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Wiki User

14y ago
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5mo ago

One lightyear is equivalent to 9.461 trillion kilometers. To find the distance in kilometers per hour, you would need to divide this by the number of hours in a year (8,760 hours). This would give you approximately 1,080,815,900 kilometers in one lightyear per hour.

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Q: How many kilometers in one lightyear per hour?
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