Initial Date Argument

I'm using a version of theme_views_view_timeline that allows for a view argument to define its initial date.

  if (is_numeric(arg(1))) {
    $initial_date = arg(1);
  }
  
  else if ($initial_focus == 'today') {
    $initial_date = time();
  }
  // etc etc etc

In conjunction with the custom breadcrumbs module, this allows you to set the path of a timeline node to include its date. Then if someone navigates back to the timeline from the breadcrumbs, the view will be centered on the event they were just viewing.

It can also allow you to link directly into the timeline at a particular point.

Hope someone finds this useful.