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The original was posted on /r/todayilearned by /u/RealisticBarnacle115 on 2024-11-18 04:32:00+00:00.

Original Title: TIL a study shows time passes 4 nanoseconds faster per day at the 450m-high Tokyo Skytree observation deck than at ground level. A University of Tokyo professor said clocks “will become tools for measuring time and space, such as differences in altitude, in line with the theory of relativity”.