Unfortunately it cannot be done in a simple way in our charts. The matter is that charts can allocate the data this way only for real-valued arguments. But there is a workaround: if the date is transformed to a real number, then they will be correctly allocated along an axis, and before output its value you need to convert it back to date. We prepared a sample that demonstrates how you can do it. Please download it from here:

http://www.perpetuumsoft.com/Support/chart/ChartsDateArgument.zip