Friday is the day of the week falling between Thursday and Saturday. It is the sixth day in countries that adopt a Sunday-first convention. In ISO 8601, in work-based customs, and in countries adopting Monday-first conventions, it is considered the fifth day of the week. (See Days of the week for more on the different conventions.)
In most countries with a five-day work week, Friday is the last workday before the weekend and is, therefore, viewed as a cause for celebration or relief. In some offices, employees are allowed to wear less formal attire on Fridays, known as Casual Friday or Dress-Down Friday. In Saudi Arabia, however, Friday is the last day of the weekend and Saturday is the first workday. Moreover, in Israel, Friday is the first day of the weekend, and Sunday is the first workday.
