Video transcript for 'Day and night' SEYMOUR: Hello ... about a month for the moon to go all the way around the Earth in a circle, SEYMOUR: we call this an orbit! ROSIE: and then it take a ...

That’s why we have day and night! SEYMOUR ... In Svalbard, Norway, which is north of the Arctic Circle, there is no night time between April and August, and the Sun never sets.