When does a 180 day deadline not mean that in 180 days time is up? Answer: When the SEC says so and the DC Circuit gives the conclusion Chevron deference. That is the holding of Montford and Company, Inc. v. SEC, No. 14-1126 (Decided July 10, 2015).
via Deadlines And SEC Enforcement: When 180 Days Is Not 180 Days | SEC ACTIONS