The number of days per week is a prime number...
The number of days per week is a prime number...
... That's why it's so difficult to remember to do someting every 2nd or 3rd day.
Remembering to do something each day or every 7th day (e.g. every Friday) on the other hand is easy.
For a few glorious years there was an alternative that solved all your problems: The French Revolutionary calendar
10 days per week, 10 hours per day, 100 minutes per hour, 100 seconds per minute.
The French were serious about the decimal system (thanks for the kilograms though).
I sincerely want 10h100m100s days, our current imperial system is so shit.
But then, I do appreciate essentially the entire world being on board with 24h60m60s, that does ease things up a bit.
Much as I love the metric system, I kinda think the moment for changing time units has passed. At the latest when computers became a thing, probably even before that.
And 12 based systems have the advantage of having having many divisors which is very neat as well. You can divide an hour by 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30 and 60 and end up with an even number of minutes. Then again with a decimal system fractions wouldn't be so bad.
Some months have a prime number of days.
Another one only sometimes does
There are now at least a dozen calendar reformists edging on posting a rant about this lol.
Worth noting though that this has mostly stuck around because any attempt to switch to a more divisible week structure is met with resistance from Christians and Jews since going off 7s messes with their calendars.
Of course you could use just two liminal days inserted outside of the standard month or week and basically have a calendar where holidays stop jumping dates.
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Actually this incentivizes everyone to have the same periodicity to their recurring tasks. It makes it easier to remember others’ habit schedules.