r">day_type</span><span class="special">;</span>                     
  <span class="keyword">typedef</span> <span class="identifier">date_type</span><span class="special">::</span><span class="identifier">month_type</span>                                <a name="boost.date_time.date_facet.month_type"></a><span class="identifier">month_type</span><span class="special">;</span>                   
  <span class="keyword">typedef</span> <a class="link" href="period.html" title="Class template period">boost::da