efsynopsisdiv"><pre class="synopsis"><span class="comment">// In header: &lt;<a class="link" href="../../boost_units/Reference.html#header.boost.units.base_units.astronomical.light_hour_hpp" title="Header &lt;boost/units/base_units/astronomical/light_hour.hpp&gt;">boost/units/base_units/astronomical/light_hour.hpp</a>&gt;

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<span class="keyword">struct</span> <a class="link" href="base_unit_inf_idp110623232.html" title="Struct base_unit_info&lt;astronomical::light_hour_base_unit&gt;">base_unit_info</