&gt; According to what? Your use?<p>Do you know anyone or any use case that requires calculations of years between 0-99 and uses cal?<p>Yes, it is quite obvious that most uses is for years &gt; 1900, you&#x27;re free to do a study yourself if that&#x27;s what you want.<p>&gt;  As the command can&#x27;t ask you what you meant, the default behaviour is sane.<p>Not from an usability point of view.