Yep, I was up until midnight last night. Here's what the sky looks like at its darkest in late May.
At work, folks generally dress very nicely, professionally. Now that the warm weather has started, everyone is wearing t-shirts and casual clothes and asking me why I'm not wearing shorts. Norwegians become entirely different people in the summer, maybe because there is no gradual season change to give continuity to life. In a very short time it goes from dark winter to bright summer. You do indeed feel like a different person.