title: Java Quartz default timezone
body: <p>I run Tomcat with <code>-Duser.timezone=UTC</code>. However Quartz scheduler 2.2.1 seems to run in Europe/Prague which is my OS timezone.</p>
  
  <p>Is there a way to run Quartz in custom timezone or determine which timezone Quartz is using?
  If not, is there a way to determine OS timezone programatically?</p>