I had such success with all your answers to my last SRT question here I’ll try another. The LT seems very symmetric. To the observers in each frame, the other’s clocks appear slower, etc. Is that true for out GPS satellites? If we ignore the GRT effect of speeding up their clocks, I think it is agreed that the SRT effect makes their clocks “appear” (?) slower. Don’t their clocks have to really be slower than ours? Do our ground-based clocks appear slower to them – say to an astronaut circling the globe? Thanks in advance for any help.