yeh, that looks like an average midday for the UK
The problem is when people will complain because they can't see where their going at night time, it's hard to judge what is the approriate light levels at night and i guess they got it a bit wrong so others complain about it not being dark enough.
Think about it this way, if you choose to do a night sailing for the first time you spawn and you can't see a thing like in reality, many people will be put off straight away. Where-as at the current light people can see and can still enjoy it, but then someone else always complains and people say it is to light
Possibly if they have a sliding bar so you could adjust how dark the night would be that will keep everyone happy.