Depends on which species of quail eggs your incubating.Can this apply for quail eggs? And also what do you mean by not always in the same direction? Does it mean like sometimes when you go from x to o alternating going from left and to right and sometimes you do it from right to left?
Coturnix have an incubation period of 16 to 19 days.
Bobwhites 23 to 24 days
Gamble's 23 to 24 days
California Valley 23 to 25 days
Mountain 24 to 26 days
I incubate at 100°F and 43% Rh, I increase the Rh to 55 to 60% for the last 3 or 4 days of incubation.
I use auto turners.