Diurnalsexual

Diurnalsexual is a term for those who feel that their sexual attraction is stronger during the day and weakens during the night, or simply doesn't exist at night. They may feel that the later it gets the more their sexual attraction weakens, or it may weaken an equal amount no matter the time of night.

The opposite is nocturnalsexual.

History
The term was coined by FANDOM users Stardustcollective and Acornfig on November 21, 2021, after seeing that nocturnalsexual did not have an opposite.