PerDay</a></li>
        <li><a href="dart-core/Duration/microsecondsPerHour-constant.html">microsecondsPerHour</a></li>
        <li><a href="dart-core/Duration/microsecondsPerMillisecond-constant.html">microsecondsPerMillisecond</a></li>
        <li><a href="dart-core/Duration/microsecondsPerMinute-constant.html">microsecondsPerMinute</a></li>
        <li><a href="dart-core/Duration/microsecondsPerSecond-constant.html">microsecondsPerSecond</a></li>
        <li><a href="dart-core/Duration/millisecondsPerDay