Magic, Calendry
Four Seasons of (
Three Months of (
One Commencement Day,
Four Weeks of {
Seven Days
},
One Summation Day
},
One Transition Day
} Should be 364 days.
364 days plus a leap week
Every fourth year,
But not every twelfth,
But every seventy-second,
But not every 864th,
But every 7776th,
But not every 15552nd,
But every 46656th,
But not every 279936th,
Should lose one day from the true sidereal every 461159.18 years.
Magic, Calendry
@icefox I have one of those as well, but for religious purposes, I wanted a twelve/seven/four division on this one. I could bite the bullet and skip the intercalendary days in favor of a full leap month, bug I suspect the math for that will be obscene if I want the same accuracy.
The Lapinian Civic is a 13/4/7 with a leap week; that was my first discovery.
Magic, Calendry
@icefox I've also got a true lunar Equestrian Nightmare calendar using nested 21/8 metonic cycles and an alternating 29/30 month lengths. I need to write that one back up and validate the maths.