Frank J. Wilstach, comp. A Dictionary of Similes. 1916.

Obvious

Obvious as circus parade.
—Anonymous

Obvious as noonday sun.
—Robert Browning

Obvious as stars on a clear night.
—Alfred Henry Lewis

Obvious as the midnight stars.
—William J. Mickle

Obvious as the gloss upon a new silk hat.
—H. G. Wells