The sunrise of the first day of the four seasons enters into the Southern temple of Mnajdra and lights up the interior of the building. The ray of sunlight on summer solstice, lights up the edge of a megalith on the left of the entrance chamber. Likewise, on the winter solstice, the sunbeam arrives on a twin megalith on the right of the entrance chamber. On the Equinox days the sunlight goes into the temple and its beam lights up the main axis of the temple.