Most of our calendaric time frames have some basis in nature. The year is based on the time it takes to revolve around the sun. The month is (loosely) based on the time the moon takes to revolve around the Earth. The day is based on the amount of time it takes the Earth to rotate once. Why, then, do we stick with a 7 day model for the week, one which is completely arbitrary and doesn't divide comfortably into any of the other measurements?
Why don't we instead have a 10 day week? It would divide comfortably into a 30 day month, by having 3 weeks a month. You would have 36 weeks in a year, with 5 "leap weeks," months where 1 of the weeks would have 11 days, with the extra being a day off. The work week could be 4 days of work, 1 day of rest, then 3 days of work and 2 days of rest. I think breaking the work week up a bit like that would enable people to recharge their batteries partway into the week and get their thoughts in order. It would give students a day for study in the middle of the week if they felt the need to catch up. You would have "mid week," and "week end."
The 10 day week system would have 252 work days per year, before national holidays. The current 7 day system has 260.71 work days per year before national holidays. That number would be even closer if several of the national holidays were held on "leap weeks."
Anyone else like this idea?