If you listen to enough Huberman Labs podcasts you'll hear him talk about the importance of getting some direct sunlight in the morning on a daily basis. Here's one example: https://youtu.be/UF0nqolsNZc
Also in the anecdotes folder, saw a sleep specialist with my (young adult) child and he stressed the importance of getting daily sunlight exposure.
Ah yes the "People living in California forgetting the rest of the work isn't like California" phenomenon - I would love to get sunlight every day but living in the UK that just isn't viable. Sunlight into my eyeballs within 15 minutes of waking up? Forget about it between October and March.
Further evidence to me that humans weren't supposed to stray far from the equator and that I was born in the wrong climate (yes I am working on moving south)
I live in Norway. My sunrises are a little after 9:30. IN a couple weeks, it'll be a half an hour later. Sunset is before 3 in the afternoon. If you wake up late enough and get lucky enough not to have cloud cover, you can get some weak sunlight that won't be enough to give vitamin D even if you could spend enough time outside without long sleeves on.
Realistically, folks aren't getting sun in the morning.
I'm not looking to move south, though. I moved up here for marriage and the weather has just been a nice benefit.
Whenever people talk about the benefits of direct sunlight, those wavelengths make it through clouds (just to a lesser degree). Whereas 5-10 minutes morning exposure is plenty without clouds, it is recommended to increase to 15-20 minutes during cloud cover. In both cases, face towards (but don't look directly at) the sun for the best effect.
This got to me too. I moved from NY to Paris and the fact that the days are so short in winter doesn't make up for the fact that they are quite long in the summer. I wake up at 6 and there is no sunlight until 8 these days. Even moving to the south of France wouldn't help much.
Also in the anecdotes folder, saw a sleep specialist with my (young adult) child and he stressed the importance of getting daily sunlight exposure.