Who are you?

In the morning as you wake from last night's slumber, who are you?
Once you've steeped your morning tea or sipped your first taste of delicious coffee, who are you?
Around that time when you grab a bite, whether you sit to enjoy or take it running after your next to-do task, who are you?
In the lazy afternoon sun, who are you?
Along your mid-evening stroll, who are you?
When the daylight fades away and stars start coming out, who are you?
Once the comfort of darkness has given way to a new morning, who are you?

Who are you?