Who wrote the first Day poem?

It's impossible to say definitively who wrote the first poem about "day." Poetry is an ancient art form, predating written records, and the concept of "day" is fundamental to human experience.

Here are some things to consider:

* Oral Tradition: Poems likely existed long before they were written down, passed on through generations.

* Ancient Cultures: Many ancient cultures had myths and stories about the sun and its role in creating day and night, which could be considered early forms of "day" poems.

* No Single Author: The concept of "day" is so universal that it's likely been explored in poems by countless anonymous authors throughout history.

While we can't pinpoint the first "Day" poem, we can appreciate the vast and rich history of poetic exploration of this fundamental concept.