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28<h2><span class="refentrytitle">Struct template eu_dst_trait</span></h2>
29<p>boost::date_time::eu_dst_trait &#8212; Rules for daylight savings start in the EU (Last Sun in Mar). </p>
30</div>
31<h2 xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv-title">Synopsis</h2>
32<div xmlns:rev="http://www.cs.rpi.edu/~gregod/boost/tools/doc/revision" class="refsynopsisdiv"><pre class="synopsis"><span class="bold"><strong>template</strong></span>&lt;<span class="bold"><strong>typename</strong></span> date_type&gt; 
33<span class="bold"><strong>struct</strong></span> eu_dst_trait {
34  <span class="emphasis"><em>// types</em></span>
35  <span class="bold"><strong>typedef</strong></span> date_type::day_of_week_type                day_of_week_type;  
36  <span class="bold"><strong>typedef</strong></span> date_type::month_type                      month_type;        
37  <span class="bold"><strong>typedef</strong></span> <a href="last_kday_of_month.html" title="Class template last_kday_of_month">date_time::last_kday_of_month</a>&lt; date_type &gt; start_rule_functor;
38  <span class="bold"><strong>typedef</strong></span> <a href="last_kday_of_month.html" title="Class template last_kday_of_month">date_time::last_kday_of_month</a>&lt; date_type &gt; end_rule_functor;  
39
40  <span class="emphasis"><em>// <a href="eu_dst_trait.html#id2484991-bb">public static functions</a></em></span>
41  <span class="type">day_of_week_type</span> <a href="eu_dst_trait.html#id2484995-bb">start_day</a>() ;
42  <span class="type">month_type</span> <a href="eu_dst_trait.html#id2442348-bb">start_month</a>() ;
43  <span class="type">day_of_week_type</span> <a href="eu_dst_trait.html#id2442361-bb">end_day</a>() ;
44  <span class="type">month_type</span> <a href="eu_dst_trait.html#id2414469-bb">end_month</a>() ;
45  <span class="type"><span class="bold"><strong>int</strong></span></span> <a href="eu_dst_trait.html#id2414482-bb">dst_start_offset_minutes</a>() ;
46  <span class="type"><span class="bold"><strong>int</strong></span></span> <a href="eu_dst_trait.html#id2509071-bb">dst_end_offset_minutes</a>() ;
47  <span class="type"><span class="bold"><strong>int</strong></span></span> <a href="eu_dst_trait.html#id2509628-bb">dst_shift_length_minutes</a>() ;
48};</pre></div>
49<div class="refsect1" lang="en">
50<a name="id2644427"></a><h2>Description</h2>
51<p>These amount to the following:</p>
52<div class="itemizedlist"><ul type="disc">
53<li><p>Start of dst day is last Sunday in March</p></li>
54<li><p>End day of dst is last Sunday in Oct</p></li>
55<li><p>Going forward switch time is 2:00 am (offset 120 minutes)</p></li>
56<li><p>Going back switch time is 3:00 am (off set 180 minutes)</p></li>
57<li><p>Shift duration is one hour (60 minutes) </p></li>
58</ul></div>
59<div class="refsect2" lang="en">
60<a name="id2644454"></a><h3>
61<a name="id2484991-bb"></a><code class="computeroutput">eu_dst_trait</code> public static functions</h3>
62<div class="orderedlist"><ol type="1">
63<li><pre class="literallayout"><span class="type">day_of_week_type</span> <a name="id2484995-bb"></a>start_day() ;</pre></li>
64<li><pre class="literallayout"><span class="type">month_type</span> <a name="id2442348-bb"></a>start_month() ;</pre></li>
65<li><pre class="literallayout"><span class="type">day_of_week_type</span> <a name="id2442361-bb"></a>end_day() ;</pre></li>
66<li><pre class="literallayout"><span class="type">month_type</span> <a name="id2414469-bb"></a>end_month() ;</pre></li>
67<li><pre class="literallayout"><span class="type"><span class="bold"><strong>int</strong></span></span> <a name="id2414482-bb"></a>dst_start_offset_minutes() ;</pre></li>
68<li><pre class="literallayout"><span class="type"><span class="bold"><strong>int</strong></span></span> <a name="id2509071-bb"></a>dst_end_offset_minutes() ;</pre></li>
69<li><pre class="literallayout"><span class="type"><span class="bold"><strong>int</strong></span></span> <a name="id2509628-bb"></a>dst_shift_length_minutes() ;</pre></li>
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