I awake at dawn, Tej, and the first bird I hear is our male cardinal. I believe, his mate is a late sleeper - she appears a little later.
The gloaming and dawn are my favorite times of day. Just as day ends and just as it begins. Your poem catches those "routine" moments well. But, they aren't routine at all. The gloaming is the settling and quieting of day and the dawn is the start of hope.
The actions of the sun rising and setting may be routine, but I think the meaning of those actions is anything but routine. Well, at least, if we pay attention. Too often we are rushing from one moment to another and don't appreciate the miraculous beginning and ending of day. Thank you for reminding us that these moments that occur every 24-hours are extraordinary.