I have a wake-alarm[0] that triggers 30 minutes before civil twilight, that is roughly 60 minutes before local sunrise. In the northern hemisphere at 52 degree

I have a wake-alarm[0] that triggers 30 minutes before civil twilight, that is roughly 60 minutes before local sunrise. In the northern hemisphere at 52 degrees it gets earlier by about 2 minutes each day (additional 4 minutes of daytime). So I get more sleep and short days in winter and less sleep and longer days in summer. It's liberating basing schedule on it and not some arbitrary time. [0] https://f-droid.org/packages/com.forrestguice.suntimeswidget/ https://f-droid.org/packages/com.forrestguice.suntimeswidget...