Moons

The moons in the Kingdom of Loathing, Ronald and Grimace, affect several things. There are certain days, called Stat Days, on which stat gains are higher for one particular stat (as is the HP or MP gained from resting). The moons also affect Temporary Lycanthropy (obtained from blood of the Wereseal), the Grue familiar, and the effects of the Talisman of Baio and the Jekyllin hide belt.

For a rundown of upcoming moons see this moon page.

Here's how it all pans out:

Ronald	Grimace	Stat Day	Resting	Temporary Lycanthropy	Grue	Talisman of Baio	Jekyllin hide belt
		Moxie		-100% Muscle	Attacks	No Effect	+9 All Stats +15% Item Drops
				-75% Muscle	Attacks	+10% All Stats	Unknown
				-25% Muscle	Attacks	+30% All Stats	Unknown
				No Effect	Attacks	+40% All Stats	Unknown
		Mysticality	x2 MP	+50% Muscle	Does Not Attack	+60% All Stats	Unknown
				+25% Muscle	Does Not Attack	+50% All Stats	Unknown
				+25% Muscle	Does Not Attack	+50% All Stats	Unknown
				No Effect	Attacks	+40% All Stats	Unknown
		Muscle	x2 HP	No Effect	Attacks	+40% All Stats	Unknown
		Muscle	x2 HP	+25% Muscle	Does Not Attack	+50% All Stats	Unknown
				+25% Muscle	Does Not Attack	+50% All Stats	Unknown
				+50% Muscle	Does Not Attack	+60% All Stats	Unknown
		Mysticality	x2 MP	+50% Muscle	Does Not Attack	+60% All Stats	Unknown
				+25% Muscle	Does Not Attack	+50% All Stats	Unknown
				-25% Muscle	Attacks	+30% All Stats	Unknown
		Moxie		-50% Muscle	Attacks	+20% All Stats	+7 All Stats +25% Item Drops

References

• The names of the moons, Ronald and Grimace, are very similar to Ronald McDonald and the Grimace, two of the mascots of the McDonald's fast-food restaurant chain.