God and light are connected.  We enjoy and need sunshine and day light because they are reflections of God's character.  We were meant to enjoy our Father personally and up close.  We need Him on a daily basis and it is best to spend time with Him when we first get up and can enjoy the effect of that time throughout the day.  As God's children God wants us to be light wherever we go.  Don't get lulled into living in darkness when God says you are light!