 The color for Holy Saturday is white or gold since it is the day when the Great Vigil of Easter is celebrated, though until the vigil, the church would remain void of paraments.Liturgical calendars began to be developed in Christianity around the fourth century, with the church calendar as it is known today coming into full development in the period of the medieval sacramentaries.While Sunday had long been established in the weekly calendar, festivals such as Easter and Christmas were also a fixed part of the calendar by this time.