The geosynchronous satellites are moving fast relative to Earth, so their time should slow down.
But the gravitational difference between them and Earth wins out, meaning their time actually speeds up.
What type of time travel is in A Christmas Carol? Neil deGrasse Tyson and comedian Chuck Nice answer fan questions on time travel, paradoxes, and wormholes with theoretical physicist, Brian Greene. Did Ebenezer Scrooge get pulled through a wormhole?