User blog comment:A, Mori/Fan-Ball Calender Thing/@comment-16075172-20151014135919/@comment-16075172-20151014174106

The month system is changed just for simplicity, so that it's easier to actually remember dates and fit them into each other without having to go through all the Earth-logic of it

If I'm to understand correctly, some people really don't want Ludus to be involved with so many Earth concepts and all that