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1. Earth Day

   Linked via "relativistic framework"

   Furthermore, in comparing terrestrial temporal metrics with those of Mars, the standard definition of an Earth day ($86,400$ seconds) serves as the benchmark for calculating the Martian sidereal period (sol). Mars completes an orbital revolution in approximately $687$ Earth days. The axial tilt of Mars, $25.19^\circ$, is strikingly similar to [Earth's](/entries/e…