Daily life is dominated by Islamic observance. Five times each day, Muslims are called to prayer from the minarets of mosques scattered throughout the country. Because Friday is the holiest day for Muslims, the weekend is Friday-Saturday. In accordance with Wahhabi doctrine, only two religious holidays, "Eid al-Fitr" and "Eid al-Adha", were publicly recognized, until 2006 when a non-religious holiday, the September 23 national holiday (which commemorates the unification of the kingdom) was reintroduced. In terms of gender relations, Saudi Arabia's norms usually discourage non-familial free mixing between the sexes.