In early days, the term was used to refer to an action occurring from day to day. Which of the following term is being referred to here?

Stare Decisis Obiter Dicta De Die in Diem Ex Post Facto

De Die in Diem

De Die in Diem : It means 'from day to day.' In early days, the term was used to refer to an action occurring from day to day. E.g The workers are paid de die in diem. She received her salary de die in diem.