Nikko Day Trip

My partner and I will be going to Nikko for a day trip and I understand sunset will be at 4:30pm on the day we are there. I'm just looking into booking our return limited express train tickets, but I am unsure whether to book 16:20, 17:02, 17:24, 17:44 or 18:41. Is there pretty much nothing to do/see once the sun goes down? Is it worth seeing sunset anywhere? Should we just head out of Nikko as soon as the sun starts to go down?

by bingbanggggggg