3 ms·

Or perhaps surgically appended into your palm or something...

• euroderf 2y ago
  That would be the ultrahigh-precision version of Logan's Run.
• amelius 2y ago
  Technically your hands could (or probably) have a different age than e.g. your brains.
  • Eddy_Viscosity2 2y ago
    They would for sure because they move independently from brain. They will also tend to be slightly lower most of the time, so the gravity they experience is slightly larger affecting time passage. The relativistic effects of hand motion on age would be small of course, but we are talking about extreme precision here.