Except when you get a blood moon. According to the Gibbon Moon Folk, a blood moon means the end of the world. The fact that these phenomena happen all the time, and so far the world hasn't ended, doesn't change their minds. All they've gotta hear is the words "Blood Moon" and immediately they believe that the Moon Gibbon has run amok and the moon is running with the blood of murdered Clangers. At which point they invariably run screaming into the woods and hide.
They're in the woods screaming as I write. They spend a lot of time terrified, and a lot of time freezing cold and getting scratched by brambles. But the Gibbon Moon Folk reckon the apocalyptic certainty is worth it. After all, they ask, how could anyone cope with the future? Much better to expect it all to end at any time. And next time, after all, probably really will be it.