The term "day-crossers" essentially refers to individuals who cross from one day to the next, meaning they are up all night or shift-working, or they are transitioning from one time period to another. There are various synonyms that can be used in place of "day-crossers," such as night owls, shift workers, graveyard shifters, 24-hour workers, night shifters, swing shifters, early birds, and time travelers. Each of these synonyms conveys a slightly different connotation and context, depending on the situation. Regardless of the term used, it's clear that some individuals operate outside of traditional nine-to-five work schedules, and it's important to recognize and appreciate their unique contributions to the workforce.