It was a cloudy mid-afternoon and none of the flowers were open yet.

A closer view of the four o'clock flowers that were not yet bloomed.

An even closer view of the four o'clock flowers having not yet bloomed.

On the next sunny morning, the four o'clock flowers had finally bloomed.

Many of the buds on our four o'clock flowering plant bloom in the sunlight of the next morning.

A very close photograph of one of the four o'clock plant's blooming flowers with its pale yellow stamen.