I used to do the same but in analog way when I moved to the Netherlands. The weather there affected so much my mood that I started to keep track of it together

I used to do the same but in analog way when I moved to the Netherlands. The weather there affected so much my mood that I started to keep track of it together with the daily color of the sky. I kept a big paper sheet next to my bed with a bunch of pencils. The problem I realized later on is that mood changes quite a lot during the day, so just checking once a day might not be very representative. I had "the diary" for 4 or 5 months until I moved out to a sunnier place :)