Weeknight
Weeknight refers to the evenings on days that are part of the standard working week. In common usage, a weeknight is an evening on Monday through Friday, when many people are finished with work or school. The exact hours labeled as a weeknight vary by country and by individual schedules, but the concept denotes the portion of each weekday that lies after daytime obligations and before late night. The term contrasts with weekend nights, which occur after the end of the workweek on Saturday and Sunday in many cultures; in places with different weekend days, the definition shifts accordingly.
Use and implications: Weeknights are a focus for routine activities such as cooking dinner, helping children
Regional variation: In some regions the workweek runs from Sunday to Thursday, so weeknights include Sunday