it’s understandable why you can see Saturn, because it’s so big, but to see earth the other way is surprising.
It’s like being an ant and seeing a human, but then being surprised being that ant on a human shoulder and still seeing his fellow ants.
Well doing the math, Saturn is about 10x as bright as the Earth.
Each point of magnitude is 2.5x as bright as the previous level.
2.5 x 2.5 = 6.25 x 2.5 = 15x.
So the Earth from Saturn would appear to be about +2.5 magnitude as compared to Saturn from Earth. At it’s dimmest, Earth would be about 4th magnitude, at it’s brightest, close to 3rd magnitude.
Definitely visible with the naked eye.