Board Thread:Editor Board/@comment-26391060-20140610110407

Source: saop2 part3

Aincrad's moon is capable of shining most open sky to be bright such that it won't have any problem to walk outside without extra lightinh (during nighttime). But of course you can't see the moon otself if you are npt near the edge of a floor,  although those logjt are reflected and shined via the bottom part of the upper floor, thay's already enough to fill the whole space woth blue light and create a fantasy effect. 