tom_time_zone_base">custom_time_zone_base</a> <span class="special">:</span>
  <span class="keyword">public</span> <span class="identifier">date_time</span><span class="special">::</span><span class="identifier">time_zone_base</span><span class="special">&lt;</span> <span class="identifier">posix_time</span><span class="special">::</span><span class="identifier">ptime</span><span class="special">,</span> <span class="identifier">CharT</span> <span class="special">&gt;</span>
<span class="special">{</span>
<