Board Thread:General Mod Discussion/@comment-25565811-20170120101550/@comment-26172435-20170120103714

I just checked lotr\common\entity\LOTREntityInvasionSpawner.class in the mod and I cannot find any clear indication that invasion spawning is coded with some calendar-dependent prerequisite, but then again, many functions in the code only have a numeric name and it takes a bit more than my patience and insights to figure out how exactly these mechanisms are coded.

The LunarEclipse dependency was added by Glflegolas on april 28th 2016. Probably he knows more about this. :)