The most recent story of the Monogatari series, Tsukimonogatari, has just aired and has all of its four episodes aired on one day. The same thing happened with Hanamonogatari which aired on August 6, 2014. They aired all of its five episodes on that day.
Why did they do that? Why didn't they wait and air 9 episodes over multiple days, or maybe wait some more to make Monogatari Series: Third Season with Owarimonogatari and Zoku-Owarimonogatari? Why did they air all its episodes in one day? What's the point of making it have 4 or 5 episodes when it could also fit in a movie as well?