Premiered October 21, 1966.
Although it's a 2 episode story, which makes it a 1 hour long, dialogues still run with an ultrasonic speed. It especially noticeable when making a subtitles for the series.
P. S.: Only bright side of 30 min. episodes for me, that I have less job of editing and syncing text for them ).
Wikipedia page about series [ Ссылка ]
