3 ms·

Relativity is the least of your concerns when different planets have different length "hours"

• midasuni 3y ago
  All planets (in the same plane of relativity) agree on the length of a second. The length of a day varies - both on earth and on mars, and is meaningless for people in orbit, but a second is a second.
  • contravariant 3y ago
    I think you forgot about general relativity there. Even just for satellites the length of a second is measurably different.
    • bavell 3y ago
      Right, the passage of time is affected by how deep in a gravity well you are (i.e. how much acceleration you are experiencing). Time passes faster for satellites than for ground stations.