ion/secondsPerDay-constant.html">secondsPerDay</a></li>
      <li><a href="dart-core/Duration/secondsPerHour-constant.html">secondsPerHour</a></li>
      <li><a href="dart-core/Duration/secondsPerMinute-constant.html">secondsPerMinute</a></li>
      <li><a href="dart-core/Duration/zero-constant.html">zero</a></li>
    </ol>
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      <div><h1><span class="kind-property">inMicroseconds</span> pr