title: Django celery executes method every other Friday?
body: <p>I'd like to have a method fire every other Friday using Django Celery. Unfortunately, I haven't been able to crack the <a href="http://docs.celeryproject.org/en/master/userguide/periodic-tasks.html#crontab-schedules" rel="nofollow">crontab</a> code.</p>
  
  <p>Any thoughts?</p>