Minecraft wiki entry for Daylight_cycle, associated text: Between dusk and dawn, players may sleep in a bed. In singleplayer mode, doing so advances the daylight cycle to dawn and sets the weather to clear. This also occurs in multiplayer as long as every player online is in a bed simultaneously. Time does not pass for other aspects of the world, however; for example, crops do not grow and furnaces do not cook or smelt as they would when players are awake.