Angular js JSON data with MVC model binding for DateTime?
Do you have the option of switching your AJAX postback to be handled by a WebApi's ApiController instead of an MVC controller?
I ran into this problem recently and took advantage of the ApiController's support for ISO 8601 date format.
Here's some info: http://www.hanselman.com/blog/OnTheNightmareThatIsJSONDatesPlusJSONNETAndASPNETWebAPI.aspx