By the way, a Greek "full day" isn't the same as the English "long day". "Long day" implies tiredness, whereas "full day" doesn't have a positive or a negative connection. It's simply a day in which lots of things happened.
We have an expression in English for a day in which lots of things happened as well! We call it a "full day".
Yep, exactly, I don't know what the article is on about.
It's the same in Spanish. As a native Spanish speaker (and a Swedish speaker too!), this really annoyed me about the first two paragraphs of the article. The authors clearly didn't speak the languages they were commenting on, as the expressions they compared are not analogous to each other!