Transits of Venus are not visible from the whole world. Here you can find out where it is possible see it.
Unfortunately, some areas will have night when Venus transits the Sun. In some areas the Sun will rise after the start of the transit, while in other places the Sun will set before the end of the transit. From areas with night during the whole transit it will not be possible to see the historic event at all.
The illustration shows which areas of the globe where the transit is fully or partially visible and where it cannot be seen at all. Click on the illustration for full size. Fred Espenak, NASA.
In Norway we will be able to see all of the transit. The next time, the night between June 5 and 6, 2012, we will only see parts of the transit. From Northern Norway all of that transit will be visible too.
Let us take a closer look at the first transit to come - on June 8, 2004. In the illustration below the Earth is shown at two different times as it will look from Venus. The first illustration shows the situation at the beginning of the transit, the second illustration shows the situation at the end of the transit.
The Earth seen from Venus on June 8, 2004 at first and last contact respectively. Click on the illustrations for full size. Illustrations: Institute of Theoretical Astrophysics, University of Oslo.
The illustrations show the areas where the transit will be visible. Areas that are visible on both illustrations will have the view of the whole transit. From areas visible on the first illustration the start of the transit is visible. From areas visible on the second illustration they will see the end of the transit.
On the first illustration Norway is situated almost on the top of the globe. The mountains are like white dots. To the right we can see the ice covered artic sea and in between we find Spitsbergen. In the middle of the image we see Southeast Asia. In the whole of Norway the Sun will be high above the horizont throughout the transit.
On the second illustration it is easier to see Norway above the middle of the illustration. This means that the transit ends around noon local time and that is true: It ends at 13.19 local time.
To find the visibility from other areas of the world, you should study the illustrations.