Here is the pneuminous calendar without the between days. A more comprehensive document will follow. Hopefully we’ll have a fully coded android app for it at some point in the future.
The calendar is based on a mixture tarot/qabalah filtered through some of the CEO’s idiosyncratic numerology which originates in an appreciation of 4s and 7s, though 23 like accretions also feature (the path between 2-3 is Eris etc).
Further layers of other esoteric systems are accreted into it. Hunting them out and seeing new ones is all part of the accretive fun.