I ♥ Friday Friday is the day between Thursday and Saturday. In many countries, Friday is the last day of a five-day working week, and is viewed as a cause for celebration or relief (leading to the phrase "TGIF", for "Thank God/Goodness It's Friday"). In some workplaces workers wear less formal attire on Fridays, known as Casual Friday or Dress-Down Friday. In other countries, Friday is the first day of the weekend, with Saturday the second. In Saudi Arabia, Afghanistan and Iran, Friday is the last day of the weekend, with Saturday as the first day of the working week. The name Friday comes from the Old English Frīġedæġ, meaning the "day of Frigg", a result of an old convention equivocating the Old English goddess Frige with the Roman goddess Venus, with whom the day is associated in many different cultures.