Bi tradeetion comin fae the auncient Jews, Setturday is the hindmaist day o the week. That convention remains universallie standard i' the United States, bit in modnen Europe mony fowks nou think o Setturday as the saxt (forelast) day o the week, an Sunday the last. The modren European convention haes been makkit formal bi ISO 8601. On the ither haund, in mony Islamic kintras, Setturdays is the first day o the week, wi Fridays as holidays.