In his Road to Wigan Pier George Orwell uses the word matutinal, as in
"The matutinal tub divides the classes more effectually than birth, wealth, or education."
The word relates to or rfers to soemthing occurring in the morning or early in the day. Other examples
He was an imposing and sombre personage, before whom the choir boys in alb and in jacket trembled, as well as the machicots, and the brothers of Saint-Augustine and the matutinal clerks of Notre-Dame, when he passed slowly beneath the lofty arches of the choir, majestic, thoughtful, with arms folded and his head so bent upon his breast that all one saw of his face was his large, bald brow. Notre-Dame de Paris by Victor Hugo
"Ata," explained So-ta, when I questioned her as to the purpose of this matutinal rite; but that was later.
The Land That Time Forgot by Edgar Rice Burroughs