The hour (common symbol h) is a unit of w:time. It is not an w:SI unit but is accepted for use with the SI.

In modern usage, an hour is a w:unit of measurement of w:time of the duration of 60 minutes, or 3600 seconds. It is 1/24 of a median Earth day.

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  Hour hand
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  24 Hour Clock
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  Hourglass
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  Book of Hours detail
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  Neon Internet Cafe open 24 hours
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  Opening Hours
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  Ranching Hours
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  Rush Hour
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  Blue Hour
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  Hours of Service
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  Hours and planets