How funny you should write this. Just whilst having dinner tonight DH and I were discussing this! We love Fri/Sat weekends. Friday we usually beach it and Saturday is more of a doing day, like swim lesson for DD, go to a mall etc. We think that being busy but having a nice day on a Saturday means we never get 'Sunday evening blues'. We often go out on a Saturday night and it feels like a Saturday night, as opposed to the night before work. Does that make sense? I doubt it as it's rather garbled!
Changed in about Sep 06 (was on mat leave with DS) - it did take a while to adjust but now quite like being able to 'flop' after the week at work before having the busier day. Also I do like having more crossover with the rest of the world, it helps workwise but also things like kids skyping cousins.
It's been at least 6 years in the UAE. The real prob is if you work with international companies. Nobody gets that Friday is an off day, then the time difference with the USA means work on Saturday, then back to work here on Sunday, no rest.