Write an aubade.
Okay, speaking fomally (and here we have the wiki explanation), an aubade is a morning love song (as opposed to a serenade, which is in the evening), or a song or poem about lovers separating at dawn. It has also been defined as “a song or instrumental composition concerning, accompanying, or evoking daybreak”.
In the strictest sense of the term, an aubade is a song from a door or window to a sleeping woman. Aubades are generally conflated with what are strictly called albas, which are exemplified by a dialogue between parting lovers, a refrain with the word alba, and a watchman warning the lovers of the approaching dawn.
What it boils down to, however, is a poem praising or lamenting (the lovers are separating) the dawn.
For our purposes, dawn can be the subject or it can be incidental, and love is unnecessary.
Write sorta aubade-ish-ly.