.container {
  /* para simular que está en el medio de la página */
  margin: 300px auto;
}

.datepicker {
  transform: translate(0, 3.1em);
}

var datepicker = sandbox.dom('body').find('.bootstrap-datetimepicker-widget:last'),

position = datepicker.offset();

// Move datepicker to the exact same place it was but attached to the body
datepicker.appendTo('body');
datepicker.css({
    position: 'absolute',
    top: position.top,
    bottom: 'auto',
    left: position.left,
    right: 'auto'
});