comparisons to prior calendars
finding alternative measurements has been considered multiple times.
exploring every option is left as an exercise for the reader. below are a few brief reflections.
astronomical observations
the traditional chinese calendar signaled the solar signs and solstices!
lunisolar patterns predicated month lengths and every event followed.
natural sequences are valued but frequent adjustments to account for seasonal drifts are inconvenient.
perennial posits
the international fixed calendar set consistent days to dates each year!
equal months of 28 days standardizes weekdays. but with 13 months.
five day weeks achieve this anyways and without the unlucky number.
ten days a week
the egyptian civil calendar pioneered thirty day months long, long ago!
weeks were metered by ten days forming twelve months which about matched a five day scheme. though leap years were omitted.
roman reform added leap years but eventually gregorian was adopted. modern ethiopian calendars retain 30 day months albeit 7 day weeks.
truly original innovation shown ahead of its time.
the temporary french republican calendar placed ten days in the week!
revolutionary removal of royalty and religion requested a new calendar. decimalization was desired with ten appearing across times and dates.
similar balance between months was achieved with thirty day months and complementary days trailing.
a shifted start of the year and starting year makes this change drastic. longer hours in a day makes it unappealing.
ten months a year
the legendary calendar of romulus fixed ten months and ignored two!
months flipped between 30 and 31 days so a year was only 304 days long. winter months were left unorganized without farming tasks.
some accounts claim eight day weeks. organization feels forgotten.
the base ten numbering system is applied to everything in a deciyear!
ten months make a year and have 36 days each - 4 weeks of 9 days.
consistency in months is appreciated but the weeks become so long. subdividing a year begins to split months too.
millidays make time which simplifies calculations but changes much.