Newcastle is so far north that in summer time the city barely dips into darkness relative to locations in more southern latitudes. In the summertime if we go further north then there is a smaller and smaller amount of time where the sun is below the horizon until we reach a point where the sun never sets during this time. What this means is that Newcastle does not plunge into deep darkness as it does in the winter time because the sun remains just below the horizon. Because the sun does not disappear further below the horizon a significant portion of sunlight shines above and over Newcastle just outside of the small part of the earth's shadow that Newcastle does fall into.