I think, just to clarify, this does not set the date itself, but requires that the CEO set a date by 17 days before that. That way there's certainty for all participants in the system. There's no uncertainty among those participants. We'd know that by 17 days before polling day, a date has been set by the CEO, and it would be well known to those participants in the system.
On October 16th, 2018. See this statement in context.