Viewing sunlight in the late afternoon or evening for 2-10 minutes helps anchor the central circadian clock.

“you'd go view the sunset or you would go outside in the late afternoon or evening, again, if you safely can do that with sunglasses off, you will, if you need to wear sunglasses, fine, but it will take probably 100 to 1,000 times longer with dark sunglasses than if you take them off, again, if you wanna do this through a window at work, that's fine, but it'll take 50 times longer, so the best thing to do is just to get outside for a few minutes, anywhere from 2 to 10 minutes, also in the afternoon.”