Some concepts within the lore of Cedestrya can be somewhat confusing for those who are lost in the texts, references, and images that reflect it. I've decided to take a moment to explain things, this time talking about the calendar they use. I'll try to be as clear and concise as possible.

The Cedestryan Calendar consists of 360 days, divided into 4 Pratias (months/seasons) of 90 days each, along with 1 special Neopratia. The Pratias are Ignispratia (summer), Ventuspratia (autumn), Aquapratia (winter), and Terrapratia (spring). The Neopratia is anomalous and unique in its duration, with no fixed length and can last from hours to several days, determined by the Xsence.
Each Pratia is further divided into weeks of 9 days, each day having specific meanings that may vary depending on the context: cryzoli and neoli (Sunday, days for prayer, Aeon and Xsence worshiping, and family bonding), pyrix (Monday, the beginning of the work/study phase in general), aeryn (Tuesday, focused on exploration, export, and import trips), vulxu (Wednesday, focused on maintenance and digital control), aquzi (Thursday, focused on agriculture), tirra (Friday, contribution to the environment, and weekly trials), and nokto and lum (Saturday, for recreational activities and rest, marking the end of the work/study phase).

FYI: I don't have knowledge of astronomy. I'm just going with the flow of my resonances, so I don't know about the complete secluded Solunar System.