calendar
Although it is very stupid to make a complex set of settings by yourself, I think a fantasy novel cannot be considered a fantasy novel without its own unique settings.
Calendar is calculated according to the planet's orbit. My brain cells are not developed enough and I dare not mess around. So I adopted the ancient Aztic that is more in line with the plot in the book - that is, the 20th day of the birth day, 5 bad days, and 5 auspicious days per month. These two 5 separate main god days represent light and darkness respectively, which means that the average monthly amount is 30 days. The extra time is planned to be the faith day of other main gods. There is no big loophole in this conception theory. (Masters, don't smash my bricks...)
In terms of measurement, hey... given that many readers are not used to it, they have to adopt the metric system.
As for the month, it is better to set it according to December. For the sake of good sound, it adopts the same name as the French...
January - The Moon of Ice and Snow
February - The moon of rain
March - The Moon of Sowing
April - Moon of Flowers
May - Grazing Month
June - The month of harvest
July - Hot month
August - The month of harvest
September - The Moon of Grapes
October - Moon of Fog
November - Frost Moon
Chapter completed!