The emotions I attach to sundown and nightfall are melancholy, but I find that beautiful. Sundown has always been my favorite time. Daylight is fading and the day is over, but it's the time for bittersweet satisfaction and appreciation of everything that passed during the day. The transient beauty of all the colors in the sky remind me to appreciate everything before it's gone.
I definitely have some SAD-like symptoms though, more seasonal than time of day. This year in the Seattle area, winter was exceptionally hard on me, and many other people around me reported the same thing to a greater degree than I remembered before. I also personally heard about way more suicides happening locally. Every night for me from about November-February was a battle to pull myself up out of the pit, and some days nothing seemed to help. I ate well, slept well, took vitamins, exercised, socialized, tried to talk positively to myself and took plenty of time for self-care and I still felt like I had a sucking black hole of nothingness in my soul.
I've started taking 4,000 IUs of vitamin D every day, regardless of what I feel like, just to avoid sliding back towards that. Which is the maximum sustainable daily dose as I understand it. It seems like if I miss even one day, I'm right back down in the pit within 24 hours. I can still feel a little blue at 2,000 IUs. We'll see if it gets better now that the sunlight is back. 