Just to clarify how to calculate things.
From the 7 munes; these two cultures has 14 munths calculating based on the position of both moons. For Majhbé it's easy to calculate the position as Every Full Majhbé starts at the same points. The 1st of every Munes
But for the munth based on Lethean. Do you start the count on the First Full Lethean (The 1st of Harthmune) or the 2nd Full Lethean (the 50th of Hartmune) ?