Seasons Mod adds the four traditional seasons to Minecraft. The Seasons Mod is SMP-based, and all clients connected to a server running the mod will experience the same season at the same time, within the same world/dimension. By default, the seasons each last seven Minecraft days, but their durations can be changed per- world/dimension. When creating a new world, or loading a world that hadn’t been loaded with the mod previously, the world will start somewhere in a random season. This may lead to a seasonal transition moments after starting/loading/joining the world.