Unset automatically changed startTime

[loeffe1]

I am using multiple timepicker inputs and selecting a time in one will move the startTime of the next timpicker close to that selected time, so the select will no longer start at the original startTime. This is generally a great feature but I need to be able to reset this for some of my timepicker inputs. I tried calling

$('input.timepicker').each(function() {
    $(this).timepicker({startTime: new Date(0,0,0,6,0,0)});
})

again but for some reason this doesn't seem to have any effect. Is there some kind of reset call?