I'm in the Seattle area - Tacoma to be exact, and have to deal with the
winter crud like you do. The past few days are typical of what we have to
put up with - dark, dreary, pouring rain and lights on by 4 pm, with 30 more
days to go before it even begins to turn around. The bright sunshine we
have today is the exception - by far.
I bought a GoLITE at COSTCO about four or five years ago and put it on my
desktop by my computer for at least 15 minutes a day, generally longer and it
really does help with my sleep patterns. With all the artificial
light we get in our modern society this does provide a more natural blue
light.