The first card show a phenomen from northern Norway called midnight sun, I'ts from the summertime when the sun is shining all day and night. I have not experienced this myself, but I have seen the opposite "phenomen" - darkness all day and night, which is in the wintertime of course.
The second card is from the WC of ski in Oslo in 1982. The picture is "slightly" older I think. I'm looking forward to 2011 when Oslo is host again. I don't ski myself, so I shall not participate (!)

