Is "before midnight" a clause or a phrase.

The answer is phrase bc a clause would be, for example, forgive and forget. So before midnight is just a phrase.

Clause

Explanation:

A clause is a group of words that contains both a subject and a predicate (or a verb). There are two types of clauses.

Examples of Clauses: Independent Clauses are complete sentences. They can stand alone and express a complete thought.