It is said that the best times for seeing the Northern Lights are between 21:00 pm and 1:00 am. The Aurora Boreal will not magically appear during those hours, but then is when the sky is pitched dark. On other hours, even if we see that the sky is dark, there will be some blue or greyish tints that will make the seeing of the Northern Lights more difficult, especially if they are not really strong.