I really liked the Swatch Beats time system. Dividing a day into 1000 beats is great idea. Decimal time! The problem with it was that it could still be a day off from one place to another because of the international date line. They needed to rethink not just time of day but the month, day and year. Lots of people have tried to update the calendar but that has not worked out yet because you just can't change the days in the months. Thirteen 4 week months would be nice. I believe in that system every 5 or 6 years you have a leap week. People will not go for it because the current calendar is ingrained on their brain.
But I have an idea. My proposal for international date/time. We already count years by a decimal system so we will leave that alone. Many companies do scheduling based on the week number but there is the EU week system that begins on Monday and the US week system begins on Sunday. However some US companies that do a lot work over seas use the EU week number system. So forget the argument it is all arbitrary anyway we use the EU week number system. For the days there is just seven. So date/time would be Year Week Day @Beat. I am currently writing this on 2012 32 5 @92. Exactly one week from now is 2012 33 5 @92. Did you see how easy that is? So to keep the year/day in sync we have a 53rd week about every 5 years. (There is an exact formula so that solstices stay within a three day range.)
Someone may say "Well why not just use UTC date/time for everything?" First most people of the world will never get used to the idea of noon being at an odd time. For instance people here were I live will never accept noon at 6 a.m. UTC. Second if world date/time is a different system they will accept that where they live noon is 250 beats and 100 miles West noon is at 300 beats and the next generation will find intuitive. Third My system looks different enough so that it will register in people's minds as being different and yet it is simple enough to learn.
Steps to change the world.
Some one need to convince Swatch to go the extra step and put year week day on their web site. (also move the meridian to the same at UTC). If they do it right they could be forever in the history books.
Get the phone Beat app developers to add year week day.
Get Facebook, Google and Skype to add it to their apps. Not as an option but always present in slightly larger font than the local date/time they display.
Get smartphone makers add it.
Make it visible every where. Yes, many place will have there own local time with their traditional calendars but if it is seen every where then over time it will become the norm.