Dates can be anywhere

The standard DateTime.parse allows for dates (and times) anywhere in the string, as well as extraneous sequences (like weekdays). 

I've modified the regexp to no longer limit the search to the first part of the string to parse.

DateTime.parse("Thu 13/1/2013") no works as expected, as well as DateTime.parse("02:45:30 PM 13/1/2013")