Man of Honour
If you compensate like that, it is safe to say that in real life, they are all dark after 8 hours.
Of course, except the tritium since they won't change a single iota until their half-life comes to an end 15~ years down the line.
The rest will still be visible to dark adjusted eyes so they are essentially doing what they are supposed to do. How bright you want them to be depends on preference.