it doesn't matter really some even put them in egg cartons and just tip them side to side to turn them. you can put an x on one side and an O on the other and just flip the eggs at least 3 times a day. It's just to make sure that the embryo doesn't get stuck to the shell while incubating.
x2 Are they in cartons or laying on the side? If on their side: Sometimes I roll them O to X; other times end over end. Try to not lift the egg up off the flooring as it is more likely to fall hard and break. If in egg cartons, lift one end of the incubator, then the next time lift the other end instead. Clear as mud? Turn at least 3 times a day; more is better. If I'm up at night, I'll turn the eggs, it's quick to do. I did notice that the shell becomes more fragile and seem to be easier to break. Just my experience.
