דרקון comes from the Greek word δράκων (dragon/snake) but interestingly when you transliterate the word into Aramaic the being has the name numerological value as the number of days in the solar year.
Someone in antiquity must have noticed this.
Much folklore worldwide depicts a great serpent that encircles the world. In this case where the snake swallows its own tail to form a circle, it is known by the Greek term Ouroboros, although the symbol first appeared in Ancient Egypt.