1. plain as day - Adjective
2. plain as day - Phrase
plain as day (not comparable)
(simile) Very clear and evident.
I don't know the first thing about holding together a family, especially one that resembles an heirloom vase, shattered but glued back together for its beauty, and no one mentions that you can see the cracks as plain as day. Jodi Picoult
For all the books in his possession, he still failed to read the stories written plain as day in the faces of the people around him. Emma Donoghue
It wasn’t flagrant, and it was hardly premeditated, but Drayden’s hand grazed Oregon State running back Jermar Jefferson’s face mask plain as day. Source: Internet
The coronavirus makes it plain as day; so does Donald Trump. Source: Internet