Not quite a straight line, but definitely a dramatic change (toggle the "Day/Night Length" view to see what I mean): https://www.timeanddate.com/sun/norway/long

Not quite a straight line, but definitely a dramatic change (toggle the "Day/Night Length" view to see what I mean): https://www.timeanddate.com/sun/norway/longyearbyen https://www.timeanddate.com/sun/norway/longyearbyen