You came here in that? You are brave
All Agera work with a base-8 system (though of course, in GMing, for simplicity, I don’t). Accordingly, the Mysian system of measuring is based on 8s. From dolon to dolmelphion, the system is fairly straightforward, but, traditionally, after dolmelphion, it becomes a touch more complicated.
Throughout creation there are locations which serve as nexuses of sorts; conduits between one place and another. Such are the rules of translocation that only areas that border each other can be traversed by physical or magical means.
The ruling family depends on some magical artifact or place to secure their right to rule. A monarch isn't considered legitimate until he or she has been "accepted" by the artifact or place, whatever that might entail. It is also possible that some one else, not of the ruling family, could be accepted as the legitimate heir... A fact which the monarchs would like to keep secret.