Comic Strips

Here they are! Orange represents my Leapweek calendar and blue is Gregorian. The Y-axis is deviation from the tropical year and the X-axis is the year number. It's a 19200-year cycle to allow for both Gregorian and Leapweek to do entire iterations of their 400-year and 768-year cycles, respectively.

The Gregorian rules are, as you already know: if a year is divisible by 4, it is a leap year; unless it is divisible by 100, when it is a common year; unless it is also divisible by 400, in which case it is actually a leap year.

My Leapweek rules are: years divisible by 8, are leap (short, with 360 days instead of the usual 366) years, as are years divisible by 768 (after subtracting 4 so as not to clash with years divisible by 8). Just two rules as opposed to Gregorian's three, but they result in almost perfect correction: it takes 625 000 years to fall out of sync by 1 day, as opposed to Gregorian's 3 216 years for the same amount)

The catch is that Leapweek falls out of sync by up to 5½ days either way in between 768-year cycles, and up to 2½ days either way in between 8-year cycles. But they average out.

About the lunisolar I'm afraid to say that I ran into the same issue. Lunations are a very inconvenient duration to try and fit into neat solar days and months.

I wish it weren't as theoretical, because I really like this calendar, but yea. It's one of those things that will be impossible to change even though there's arguably better options. It's too arbitrary yet too essential and it goes in the same box as the metric second/minute/hour, the dozenal system and the Holocene calendar.

Here's a challenge though: try and devise a Martian calendar! That one is not standardised yet. I had good fun trying to match the Martian sol and year to metric units of time and maybe giving some serious use to the kilosecond, megasecond and gigasecond

As an extra, here's a 1000-year version of the graph at the start of the reply, with the current year 12 025 of the Holocene calendar :^) in the middle