Metric's nice, but each day being 10 hours in a 10 day week just doesn't work for me. But at least it's Fiveday, and I have a 20 hour weekened to look forward to.
Re parent: ~365.25 does not relate at all well to bases of 10, or much else.
We can actually thank existing social patterns including religions for locking us in to a '7 day week' which is what many calendar systems try to promote.
With (roughly) every 4 years also containing an extra day of correction (the solar orbital period is not quite 365.25 days) the concept of 'leap days' is necessary anyway.
360: 2 2 2 3 3 5 << Oooh shiny
361: 19 19 << Annoying
362: 2 181 << Annoying
363: 3 11 11 << Less Annoying, but weeks are too long
364: 2 2 7 13 << Might be workable, there's a 7 in here.
365: 5 73
The IFC picks the 364 route, and puts the leap day in the middle of the printed year. The decision of where to put that date is pretty arbitrary, but probably based around a 'summer holiday'.
360 is 5 away from the closest integer orbital period of earth. Therefore 5 'extra days' (likely holidays) would need to be added. 5 is also a factor. It would either make sense to have an extra 5 day period as one long holiday set, or an extra holiday spread out through the year 5 times, though arguments for otherwise could be made.
7 and 360 get along poorly though. We'd probably also want to keep '12 months' for sanity/existing contractual structures (esp since we can't be in units of 10), and having 'months' close to current months seems to be an advantage.
Taking 2 * 2 * 3 out of the factor set, we're left with 2 * 3 * 5 for each month.
Stepping aside for a moment, let's examine a 'perfect' 28 day month in the IFC/current calendars. 2/7ths (0.285714) of the time is 'weekend' time.
I'd propose a 10 day 'week' in the new time, I also think 2 days in a row off of work is advantageous, and I think that this time should be time 'normal workers' can expect to share off. I think that this number might actually grow over time as we increasingly approach a more Utopian society based around automation and abundance.
The 10 day 'week' would begin with the following structure.
* 2 days of work
* 4 day period of 3/4th work (on each of these days about 1/4th of workers would have an 'erands' day)
* 2 days of work
* 2 days off work - weekend
On this schedule half the workers would get a 2+5 or 5+2 and the other half would get 3+4 or 4+3; all workers on a 'standard' shift would also see 0.3 weekend time, a slight increase.
The extra 5 holiday days could either be divided somehow over the year, or used up all at once as a burst half-week holiday. The necessary leap year correction would be added to one of those periods as a holiday as well.
Since this is another example of a 'standards proposal', someone must have thought of this before...
