title: Parsing on dates with F#
body: <p>Are there some 'date parser' library that does for dates what FParsec does to strings ?</p>
  
  <p>That is, you either specify rules and it will match against them to recognize the supplied patterns. </p>
  
  <hr>
  
  <p>Conversely, are there any libraries to generate dates based on some parsing rules ?
  The idea would be to supply user with a 'real time' completion to guide him to a valid future fparsec matching.</p>
  
  <p>(does this problem of generative parsing has a name in the secluded parsing circles ?)</p>