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In most science fiction stories, although it is an issue that is seldom even touched upon, it appears that the entire Universe uses the same timekeeping and calendar system as Earth - years, months, weeks, days, hours, minutes, seconds, etc. Most planets also apparently experience a day/night cycle that is practically identical to that of Earth.
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In most science fiction stories, although it is an issue that is seldom even touched upon, it appears that the entire Universe uses the same timekeeping and calendar system as Earth - -- years, months, weeks, days, hours, minutes, seconds, etc. Most planets also apparently experience a day/night cycle that is practically identical to that of Earth.
