SerenityOS used IRC but when Andreas changed to discord he saw a massive influx of developers. I assume that it was a no brainer to use discord when forking Ladybird...
I'm from Denmark were we use the long scale. I didn't know a long scale form existed in English! It happens quite often that a billion, in English, gets translated to a billion in Danish, which is off by 999 billion and, of course, should have been a milliard. ;-)
Since the website says "All questions verified using NodeJS 24.4.0" and that all string parsing made by the Date constructor is define in ECMAScript to follow ISO 8601 plus being engine specific, the sub headline should say: How well do you know V8's Date parsing?