congregation prayer no relation day
Islam
In Islam, Friday (from sun-down Thursday to sun-down Friday, simpler than midnight to midnight in a pre-clock age) is the day of communion, of praying together, often mistaken as the holy day of Muslims corresponding to Sunday in Christianity and Sabbath (Friday evening to Saturday evening) in Judaism and Sabbatarian Christianity; yet the seventh day is the holy day of contemplation and rest also for Muslims, as it is called – Al-sabt – السبت in Arabic - the Sabbath. Friday observance includes attendance at a mosque for congregation prayer or Salat AlJumu'ah. It is considered a day of peace and mercy (see Jumu'ah) as well as a day of rest.
no relation