One thing you'll run into is that json doesn't have a datetime type so you're left with using either a number of seconds since 1970 (fairly standard) or a string representation [1].
With either approach you'll have to do some mapping in and out of the system (though date probably serialises to string more or less out of the box for most json libs).
With either approach you'll have to do some mapping in and out of the system (though date probably serialises to string more or less out of the box for most json libs).
[1] http://stackoverflow.com/questions/10286204/the-right-json-d...