Minecraft wiki entry for Difficulty, associated text: On Normal, the effects reach the maximum after 63 in-game days (1512000 game ticks) in a fully-inhabited chunk on a full moon; and on Hard after 63 in-game days the effects reach the maximum in chunks inhabited 4 1⁄6 hours during a full moon and remain at maximum in chunks inhabited over 16 2⁄3 hours.[verify]