Advancing Moon Phases Quickly for Swamp Slimes and Events

Chaining Day and Night Sleep Together

Several Overworld mechanics depend on the lunar cycle, most notably surface slime spawning in swamp biomes and increased regional difficulty effects during brighter moons. Advancing the calendar normally takes a long time because you can only skip the night half of each cycle. Combining vanilla night sleeping with daytime sleeping lets you flip through calendar days rapidly.

1. Place a bed inside a secure, well-lit room near the swamp or area where you plan to work.

2. Include a window or accessible roof hatch with a clear view of the eastern horizon so you can check the moon as soon as it rises.

3. When night falls and the current moon phase is not the one you want, sleep in the bed to skip ahead to morning.

Stopping on Your Target Night

As soon as you wake up in the morning, interact with the bed again to use the daytime sleep feature and transition straight into the following night. Step over to your window to inspect the newly risen moon. Repeat this alternating day-and-night sleep loop until you reach a full moon for maximum swamp slime spawns, then head outside to take advantage of the full night cycle.