Sunlight is one of the most powerful zeitgebers and it makes sense to try and optimize the amount of sunlight exposure. However, is there a difference between morning light and evening light in terms of how they entrain the circadian rhythm?
If I work from 9am to 5pm in a dark office building, permanent standard time might allow me an hour of sunshine before work from 8am to 9am, and permanent DST might have me arriving in work while it's still dark but allow me an hour of sunshine from 5pm to 6pm. Which of those light exposure patterns would allow me to wake up easier at 7.30am?
If I work from 9am to 5pm in a dark office building, permanent standard time might allow me an hour of sunshine before work from 8am to 9am, and permanent DST might have me arriving in work while it's still dark but allow me an hour of sunshine from 5pm to 6pm. Which of those light exposure patterns would allow me to wake up easier at 7.30am?