**Ask a monkey a physics question thread**

[MadMojoMonkey]

Yeah knew about gps satellite time needing to be adjusted, I seem to recall some tens of microseconds per day. Wonder what the difference is on the moon.

Ground level on the moon is about ~56 microseconds per Earth day shorter than ground level on Earth, IIRC.

Ong said 66 microseconds, which is close enough for my poor memory to accept.

[CoccoBill]

Ground level on the moon is about ~56 microseconds per Earth day shorter than ground level on Earth, IIRC.

Ong said 66 microseconds, which is close enough for my poor memory to accept.

Just checked that for gps satellites the adjustment is 45 microseconds per day. The difference between earth local - earth orbit - moon local doesn't sound intuitive considering gravity on the moon is 1/6 of the earth's. I'm sure there's mathemagics to explain it but not intuitive.