weekday

A weekday is any day of the seven-day week that is typically considered part of the standard working or school week. In many countries, weekdays are Monday through Friday, with Saturday and Sunday forming the weekend. Some jurisdictions observe different weekend patterns, such as Friday–Saturday or Friday–Sunday, reflecting local religious or cultural practices.

The word weekday is built from week and day, and in English the individual weekday names derive from a mix of astronomical bodies and Norse or Germanic deities: Monday from the Moon's day, Tuesday from Tiw/Tyr, Wednesday from Woden/Odin, Thursday from Thor, Friday from Frigg/Freya, Saturday from Saturn, and Sunday from the Sun. In ISO 8601, Monday is treated as the first day of the week.

Across other languages, weekday names often follow different traditions. In many Romance languages, days are named after celestial bodies or religious terms; for example, lunes, martes, miércoles, jueves, viernes, sábado, domingo in Spanish.

In everyday life, weekdays are associated with work or school routines, while weekends are commonly reserved for leisure, family time, and rest. The concept of a weekday has influenced calendars, payroll, and scheduling practices and varies with local customs and legal frameworks.